Java - Does the package statement is removed in .class file?
As we know that the package statement is when triggered by the javac command, it creates the related directories according to the package name.
For example:
// MyClassB.java
package abc.xyz;
class MyClassA{
// ...
}
class MyClassB{
// ...
}
Now when I compile this file:
javac -d . MyClassB.java
After compilation, we will have the following directory structure having the .class files.
/
|___ abc
|___ xyz
|___ MyClassA.class
|___ MyClassB.class
Now the question is that, are these MyClassA.class and MyClassB.class contains only the MyClassA and MyClassB class's compiled bytecode?
What about the following statement?
package abc.xyz;
Is that statement removed during the compilation? Or this statement is only removed from the MyClassA class and remains in the MyClassB class because the name of the file was MyClassB.java. Or maybe the MyClassB.class file only contains the MyClassB class bytecode after compilation and the package abc.xyz; is removed during the compilation as well? If package abc.xyz; is not removed at the compilation time then it would be the problem when we will use this file at runtime because the runtime engine will also trigger the package abc.xyz; statement bytecode version, so, it would be a problem. Or it is removed during the compilation? Or the bytecode is only created for the classes but not for the file which contains the package abc.xyz; statement which results that package abc.xyz; is not become the part of the .class files.
The picture below clearly explains the question:
Can anyone explain what is the scenario behind this? It is my humble request to the contributors to not negative mark my question because i have some confusions regarding java, so, i want to clear my concept.If still my question is able for negative mark, then its Ok do, but at least answer as well.
Thanks !!!
java javac
edited 2 days ago
nullpointer
46.1k1198188
asked 2 days ago
Sunny KhanSunny Khan
17711
add a comment |
As we know that the package statement is when triggered by the javac command, it creates the related directories according to the package name.
For example:
// MyClassB.java
package abc.xyz;
class MyClassA{
// ...
}
class MyClassB{
// ...
}
Now when I compile this file:
javac -d . MyClassB.java
After compilation, we will have the following directory structure having the .class files.
/
|___ abc
|___ xyz
|___ MyClassA.class
|___ MyClassB.class
Now the question is that, are these MyClassA.class and MyClassB.class contains only the MyClassA and MyClassB class's compiled bytecode?
What about the following statement?
package abc.xyz;
Is that statement removed during the compilation? Or this statement is only removed from the MyClassA class and remains in the MyClassB class because the name of the file was MyClassB.java. Or maybe the MyClassB.class file only contains the MyClassB class bytecode after compilation and the package abc.xyz; is removed during the compilation as well? If package abc.xyz; is not removed at the compilation time then it would be the problem when we will use this file at runtime because the runtime engine will also trigger the package abc.xyz; statement bytecode version, so, it would be a problem. Or it is removed during the compilation? Or the bytecode is only created for the classes but not for the file which contains the package abc.xyz; statement which results that package abc.xyz; is not become the part of the .class files.
The picture below clearly explains the question:
Can anyone explain what is the scenario behind this? It is my humble request to the contributors to not negative mark my question because i have some confusions regarding java, so, i want to clear my concept.If still my question is able for negative mark, then its Ok do, but at least answer as well.
Thanks !!!
java javac
edited 2 days ago
nullpointer
46.1k1198188
asked 2 days ago
Sunny KhanSunny Khan
17711
2
Please could you clarify this sentence? " If package abc.xyz; is not removed at the compilation time then it would be the problem when we will use this file at runtime because the runtime engine will also trigger the package abc.xyz; statement bytecode version, so, it would be a problem." What do you mean by "trigger package abc.xyz statement bytecode version"?
– Jon Skeet
2 days ago
I mean that the objective ofpackage abc.xyz;statement is to create directories and place the.classfiles inside thexyzdirectory, so, the run time will do the same job as the compile time? So, is this not the problem? Because the runtime will say lets create directories because of thepackage abc.xyz;statement, so, this is my understanding, now i don't know what is the scene behind.
– Sunny Khan
2 days ago
Let says i have a statementSystem.out.print("Hello world");. Now when this program runs theHello Worldwill be printed, right? So lets say i havepackage abc.xyz;statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.
– Sunny Khan
2 days ago
1
No, it's the compilation process that creates class files. That's entirely separate from what happens when you run the code.
– Jon Skeet
2 days ago
1
"I mean that the objective of package abc.xyz; statement is to create directories and place the .class files inside the xyz directory" - no, it's to specify the package for the classes declared in that source file. It's not "code that runs". It's the compiler that decides what it should do with class files. A different compile might not use the file system at all, but it would still need to know the package of a class.
– Jon Skeet
2 days ago
add a comment |
As we know that the package statement is when triggered by the javac command, it creates the related directories according to the package name.
For example:
// MyClassB.java
package abc.xyz;
class MyClassA{
// ...
}
class MyClassB{
// ...
}
Now when I compile this file:
javac -d . MyClassB.java
After compilation, we will have the following directory structure having the .class files.
/
|___ abc
|___ xyz
|___ MyClassA.class
|___ MyClassB.class
Now the question is that, are these MyClassA.class and MyClassB.class contains only the MyClassA and MyClassB class's compiled bytecode?
What about the following statement?
package abc.xyz;
Is that statement removed during the compilation? Or this statement is only removed from the MyClassA class and remains in the MyClassB class because the name of the file was MyClassB.java. Or maybe the MyClassB.class file only contains the MyClassB class bytecode after compilation and the package abc.xyz; is removed during the compilation as well? If package abc.xyz; is not removed at the compilation time then it would be the problem when we will use this file at runtime because the runtime engine will also trigger the package abc.xyz; statement bytecode version, so, it would be a problem. Or it is removed during the compilation? Or the bytecode is only created for the classes but not for the file which contains the package abc.xyz; statement which results that package abc.xyz; is not become the part of the .class files.
The picture below clearly explains the question:
Can anyone explain what is the scenario behind this? It is my humble request to the contributors to not negative mark my question because i have some confusions regarding java, so, i want to clear my concept.If still my question is able for negative mark, then its Ok do, but at least answer as well.
Thanks !!!
java javac
edited 2 days ago
nullpointer
46.1k1198188
asked 2 days ago
Sunny KhanSunny Khan
17711
As we know that the package statement is when triggered by the javac command, it creates the related directories according to the package name.
For example:
// MyClassB.java
package abc.xyz;
class MyClassA{
// ...
}
class MyClassB{
// ...
}
Now when I compile this file:
javac -d . MyClassB.java
After compilation, we will have the following directory structure having the .class files.
/
|___ abc
|___ xyz
|___ MyClassA.class
|___ MyClassB.class
Now the question is that, are these MyClassA.class and MyClassB.class contains only the MyClassA and MyClassB class's compiled bytecode?
What about the following statement?
package abc.xyz;
Is that statement removed during the compilation? Or this statement is only removed from the MyClassA class and remains in the MyClassB class because the name of the file was MyClassB.java. Or maybe the MyClassB.class file only contains the MyClassB class bytecode after compilation and the package abc.xyz; is removed during the compilation as well? If package abc.xyz; is not removed at the compilation time then it would be the problem when we will use this file at runtime because the runtime engine will also trigger the package abc.xyz; statement bytecode version, so, it would be a problem. Or it is removed during the compilation? Or the bytecode is only created for the classes but not for the file which contains the package abc.xyz; statement which results that package abc.xyz; is not become the part of the .class files.
The picture below clearly explains the question:
Can anyone explain what is the scenario behind this? It is my humble request to the contributors to not negative mark my question because i have some confusions regarding java, so, i want to clear my concept.If still my question is able for negative mark, then its Ok do, but at least answer as well.
Thanks !!!
java javac
java javac
edited 2 days ago
nullpointer
46.1k1198188
asked 2 days ago
Sunny KhanSunny Khan
17711
edited 2 days ago
nullpointer
46.1k1198188
asked 2 days ago
Sunny KhanSunny Khan
17711
edited 2 days ago
nullpointer
46.1k1198188
edited 2 days ago
nullpointer
46.1k1198188
edited 2 days ago
nullpointer
46.1k1198188
46.1k1198188
asked 2 days ago
Sunny KhanSunny Khan
17711
asked 2 days ago
Sunny KhanSunny Khan
17711
asked 2 days ago
Sunny KhanSunny Khan
17711
17711
2
Please could you clarify this sentence? " If package abc.xyz; is not removed at the compilation time then it would be the problem when we will use this file at runtime because the runtime engine will also trigger the package abc.xyz; statement bytecode version, so, it would be a problem." What do you mean by "trigger package abc.xyz statement bytecode version"?
– Jon Skeet
2 days ago
I mean that the objective ofpackage abc.xyz;statement is to create directories and place the.classfiles inside thexyzdirectory, so, the run time will do the same job as the compile time? So, is this not the problem? Because the runtime will say lets create directories because of thepackage abc.xyz;statement, so, this is my understanding, now i don't know what is the scene behind.
– Sunny Khan
2 days ago
Let says i have a statementSystem.out.print("Hello world");. Now when this program runs theHello Worldwill be printed, right? So lets say i havepackage abc.xyz;statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.
– Sunny Khan
2 days ago
1
No, it's the compilation process that creates class files. That's entirely separate from what happens when you run the code.
– Jon Skeet
2 days ago
1
"I mean that the objective of package abc.xyz; statement is to create directories and place the .class files inside the xyz directory" - no, it's to specify the package for the classes declared in that source file. It's not "code that runs". It's the compiler that decides what it should do with class files. A different compile might not use the file system at all, but it would still need to know the package of a class.
– Jon Skeet
2 days ago
add a comment |
2
Please could you clarify this sentence? " If package abc.xyz; is not removed at the compilation time then it would be the problem when we will use this file at runtime because the runtime engine will also trigger the package abc.xyz; statement bytecode version, so, it would be a problem." What do you mean by "trigger package abc.xyz statement bytecode version"?
– Jon Skeet
2 days ago
I mean that the objective ofpackage abc.xyz;statement is to create directories and place the.classfiles inside thexyzdirectory, so, the run time will do the same job as the compile time? So, is this not the problem? Because the runtime will say lets create directories because of thepackage abc.xyz;statement, so, this is my understanding, now i don't know what is the scene behind.
– Sunny Khan
2 days ago
Let says i have a statementSystem.out.print("Hello world");. Now when this program runs theHello Worldwill be printed, right? So lets say i havepackage abc.xyz;statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.
– Sunny Khan
2 days ago
1
No, it's the compilation process that creates class files. That's entirely separate from what happens when you run the code.
– Jon Skeet
2 days ago
1
"I mean that the objective of package abc.xyz; statement is to create directories and place the .class files inside the xyz directory" - no, it's to specify the package for the classes declared in that source file. It's not "code that runs". It's the compiler that decides what it should do with class files. A different compile might not use the file system at all, but it would still need to know the package of a class.
– Jon Skeet
2 days ago
2
2
Please could you clarify this sentence? " If package abc.xyz; is not removed at the compilation time then it would be the problem when we will use this file at runtime because the runtime engine will also trigger the package abc.xyz; statement bytecode version, so, it would be a problem." What do you mean by "trigger package abc.xyz statement bytecode version"?
– Jon Skeet
2 days ago
Please could you clarify this sentence? " If package abc.xyz; is not removed at the compilation time then it would be the problem when we will use this file at runtime because the runtime engine will also trigger the package abc.xyz; statement bytecode version, so, it would be a problem." What do you mean by "trigger package abc.xyz statement bytecode version"?
– Jon Skeet
2 days ago
I mean that the objective of
package abc.xyz; statement is to create directories and place the .class files inside the xyz directory, so, the run time will do the same job as the compile time? So, is this not the problem? Because the runtime will say lets create directories because of the package abc.xyz; statement, so, this is my understanding, now i don't know what is the scene behind.– Sunny Khan
2 days ago
I mean that the objective of
package abc.xyz; statement is to create directories and place the .class files inside the xyz directory, so, the run time will do the same job as the compile time? So, is this not the problem? Because the runtime will say lets create directories because of the package abc.xyz; statement, so, this is my understanding, now i don't know what is the scene behind.– Sunny Khan
2 days ago
Let says i have a statement
System.out.print("Hello world");. Now when this program runs the Hello World will be printed, right? So lets say i have package abc.xyz; statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.– Sunny Khan
2 days ago
Let says i have a statement
System.out.print("Hello world");. Now when this program runs the Hello World will be printed, right? So lets say i have package abc.xyz; statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.– Sunny Khan
2 days ago
1
1
No, it's the compilation process that creates class files. That's entirely separate from what happens when you run the code.
– Jon Skeet
2 days ago
No, it's the compilation process that creates class files. That's entirely separate from what happens when you run the code.
– Jon Skeet
2 days ago
1
1
"I mean that the objective of package abc.xyz; statement is to create directories and place the .class files inside the xyz directory" - no, it's to specify the package for the classes declared in that source file. It's not "code that runs". It's the compiler that decides what it should do with class files. A different compile might not use the file system at all, but it would still need to know the package of a class.
– Jon Skeet
2 days ago
"I mean that the objective of package abc.xyz; statement is to create directories and place the .class files inside the xyz directory" - no, it's to specify the package for the classes declared in that source file. It's not "code that runs". It's the compiler that decides what it should do with class files. A different compile might not use the file system at all, but it would still need to know the package of a class.
– Jon Skeet
2 days ago
add a comment |
2 Answers
2
active
oldest
votes
It does not go anywhere, it is compiled as class abc.xyz.MyClassA. You can see that if you would decompile that .class for example using javap.
answered 2 days ago
EugeneEugene
69.3k999164
But the result of thepackage abc.xyz;statement is to create the directories and place the.classfile in the directory. So, whether the run time will also create the directory again and again when this program runs, is this not a problem? orpackage abc.xyz;statement is not executed in runtime?
– Sunny Khan
2 days ago
Let says i have a statementSystem.out.print("Hello world");. Now when this program runs theHello Worldwill be printed, right? So lets say i havepackage abc.xyz;statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.
– Sunny Khan
2 days ago
@SunnyKhan "runtime runs" already compiled classes, it does not compile them again. you do understand that right?
– Eugene
2 days ago
So, thepackage abc.xyz;is not the part of runtime?
– Sunny Khan
2 days ago
add a comment |
If you open the .class file of any of your class than you can see the package details inside that. In your case if you will open MyClassA.class in text editor, then you can see something like abc/xyz/MyClassA. The the JVM will use it like abc.xyz.MyClassA. That's the reason if we need to use this class in some other class, we need to use it like import abc.xyz.MyClassA.
answered 2 days ago
DK AnshDK Ansh
176111
Let says i have a statementSystem.out.print("Hello world");. Now when this program runs theHello Worldwill be printed, right? So lets say i havepackage abc.xyz;statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.
– Sunny Khan
2 days ago
Package is used for grouping java types (classes, interfaces, enums etc). So when you use the package in your java program it bind those java types in one package.
– DK Ansh
2 days ago
Please read this from oracle for more details information. Packages
– DK Ansh
2 days ago
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
It does not go anywhere, it is compiled as class abc.xyz.MyClassA. You can see that if you would decompile that .class for example using javap.
answered 2 days ago
EugeneEugene
69.3k999164
But the result of thepackage abc.xyz;statement is to create the directories and place the.classfile in the directory. So, whether the run time will also create the directory again and again when this program runs, is this not a problem? orpackage abc.xyz;statement is not executed in runtime?
– Sunny Khan
2 days ago
Let says i have a statementSystem.out.print("Hello world");. Now when this program runs theHello Worldwill be printed, right? So lets say i havepackage abc.xyz;statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.
– Sunny Khan
2 days ago
@SunnyKhan "runtime runs" already compiled classes, it does not compile them again. you do understand that right?
– Eugene
2 days ago
So, thepackage abc.xyz;is not the part of runtime?
– Sunny Khan
2 days ago
add a comment |
It does not go anywhere, it is compiled as class abc.xyz.MyClassA. You can see that if you would decompile that .class for example using javap.
answered 2 days ago
EugeneEugene
69.3k999164
But the result of thepackage abc.xyz;statement is to create the directories and place the.classfile in the directory. So, whether the run time will also create the directory again and again when this program runs, is this not a problem? orpackage abc.xyz;statement is not executed in runtime?
– Sunny Khan
2 days ago
Let says i have a statementSystem.out.print("Hello world");. Now when this program runs theHello Worldwill be printed, right? So lets say i havepackage abc.xyz;statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.
– Sunny Khan
2 days ago
@SunnyKhan "runtime runs" already compiled classes, it does not compile them again. you do understand that right?
– Eugene
2 days ago
So, thepackage abc.xyz;is not the part of runtime?
– Sunny Khan
2 days ago
add a comment |
It does not go anywhere, it is compiled as class abc.xyz.MyClassA. You can see that if you would decompile that .class for example using javap.
answered 2 days ago
EugeneEugene
69.3k999164
It does not go anywhere, it is compiled as class abc.xyz.MyClassA. You can see that if you would decompile that .class for example using javap.
answered 2 days ago
EugeneEugene
69.3k999164
answered 2 days ago
EugeneEugene
69.3k999164
answered 2 days ago
EugeneEugene
69.3k999164
answered 2 days ago
EugeneEugene
69.3k999164
69.3k999164
But the result of thepackage abc.xyz;statement is to create the directories and place the.classfile in the directory. So, whether the run time will also create the directory again and again when this program runs, is this not a problem? orpackage abc.xyz;statement is not executed in runtime?
– Sunny Khan
2 days ago
Let says i have a statementSystem.out.print("Hello world");. Now when this program runs theHello Worldwill be printed, right? So lets say i havepackage abc.xyz;statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.
– Sunny Khan
2 days ago
@SunnyKhan "runtime runs" already compiled classes, it does not compile them again. you do understand that right?
– Eugene
2 days ago
So, thepackage abc.xyz;is not the part of runtime?
– Sunny Khan
2 days ago
add a comment |
But the result of thepackage abc.xyz;statement is to create the directories and place the.classfile in the directory. So, whether the run time will also create the directory again and again when this program runs, is this not a problem? orpackage abc.xyz;statement is not executed in runtime?
– Sunny Khan
2 days ago
Let says i have a statementSystem.out.print("Hello world");. Now when this program runs theHello Worldwill be printed, right? So lets say i havepackage abc.xyz;statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.
– Sunny Khan
2 days ago
@SunnyKhan "runtime runs" already compiled classes, it does not compile them again. you do understand that right?
– Eugene
2 days ago
So, thepackage abc.xyz;is not the part of runtime?
– Sunny Khan
2 days ago
But the result of the
package abc.xyz; statement is to create the directories and place the .class file in the directory. So, whether the run time will also create the directory again and again when this program runs, is this not a problem? or package abc.xyz; statement is not executed in runtime?– Sunny Khan
2 days ago
But the result of the
package abc.xyz; statement is to create the directories and place the .class file in the directory. So, whether the run time will also create the directory again and again when this program runs, is this not a problem? or package abc.xyz; statement is not executed in runtime?– Sunny Khan
2 days ago
Let says i have a statement
System.out.print("Hello world");. Now when this program runs the Hello World will be printed, right? So lets say i have package abc.xyz; statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.– Sunny Khan
2 days ago
Let says i have a statement
System.out.print("Hello world");. Now when this program runs the Hello World will be printed, right? So lets say i have package abc.xyz; statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.– Sunny Khan
2 days ago
@SunnyKhan "runtime runs" already compiled classes, it does not compile them again. you do understand that right?
– Eugene
2 days ago
@SunnyKhan "runtime runs" already compiled classes, it does not compile them again. you do understand that right?
– Eugene
2 days ago
So, the
package abc.xyz; is not the part of runtime?– Sunny Khan
2 days ago
So, the
package abc.xyz; is not the part of runtime?– Sunny Khan
2 days ago
add a comment |
If you open the .class file of any of your class than you can see the package details inside that. In your case if you will open MyClassA.class in text editor, then you can see something like abc/xyz/MyClassA. The the JVM will use it like abc.xyz.MyClassA. That's the reason if we need to use this class in some other class, we need to use it like import abc.xyz.MyClassA.
answered 2 days ago
DK AnshDK Ansh
176111
Let says i have a statementSystem.out.print("Hello world");. Now when this program runs theHello Worldwill be printed, right? So lets say i havepackage abc.xyz;statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.
– Sunny Khan
2 days ago
Package is used for grouping java types (classes, interfaces, enums etc). So when you use the package in your java program it bind those java types in one package.
– DK Ansh
2 days ago
Please read this from oracle for more details information. Packages
– DK Ansh
2 days ago
add a comment |
If you open the .class file of any of your class than you can see the package details inside that. In your case if you will open MyClassA.class in text editor, then you can see something like abc/xyz/MyClassA. The the JVM will use it like abc.xyz.MyClassA. That's the reason if we need to use this class in some other class, we need to use it like import abc.xyz.MyClassA.
answered 2 days ago
DK AnshDK Ansh
176111
Let says i have a statementSystem.out.print("Hello world");. Now when this program runs theHello Worldwill be printed, right? So lets say i havepackage abc.xyz;statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.
– Sunny Khan
2 days ago
Package is used for grouping java types (classes, interfaces, enums etc). So when you use the package in your java program it bind those java types in one package.
– DK Ansh
2 days ago
Please read this from oracle for more details information. Packages
– DK Ansh
2 days ago
add a comment |
If you open the .class file of any of your class than you can see the package details inside that. In your case if you will open MyClassA.class in text editor, then you can see something like abc/xyz/MyClassA. The the JVM will use it like abc.xyz.MyClassA. That's the reason if we need to use this class in some other class, we need to use it like import abc.xyz.MyClassA.
answered 2 days ago
DK AnshDK Ansh
176111
If you open the .class file of any of your class than you can see the package details inside that. In your case if you will open MyClassA.class in text editor, then you can see something like abc/xyz/MyClassA. The the JVM will use it like abc.xyz.MyClassA. That's the reason if we need to use this class in some other class, we need to use it like import abc.xyz.MyClassA.
answered 2 days ago
DK AnshDK Ansh
176111
edited 2 days ago
answered 2 days ago
DK AnshDK Ansh
176111
answered 2 days ago
DK AnshDK Ansh
176111
answered 2 days ago
DK AnshDK Ansh
176111
176111
Let says i have a statementSystem.out.print("Hello world");. Now when this program runs theHello Worldwill be printed, right? So lets say i havepackage abc.xyz;statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.
– Sunny Khan
2 days ago
Package is used for grouping java types (classes, interfaces, enums etc). So when you use the package in your java program it bind those java types in one package.
– DK Ansh
2 days ago
Please read this from oracle for more details information. Packages
– DK Ansh
2 days ago
add a comment |
Let says i have a statementSystem.out.print("Hello world");. Now when this program runs theHello Worldwill be printed, right? So lets say i havepackage abc.xyz;statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.
– Sunny Khan
2 days ago
Package is used for grouping java types (classes, interfaces, enums etc). So when you use the package in your java program it bind those java types in one package.
– DK Ansh
2 days ago
Please read this from oracle for more details information. Packages
– DK Ansh
2 days ago
Let says i have a statement
System.out.print("Hello world");. Now when this program runs the Hello World will be printed, right? So lets say i have package abc.xyz; statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.– Sunny Khan
2 days ago
Let says i have a statement
System.out.print("Hello world");. Now when this program runs the Hello World will be printed, right? So lets say i have package abc.xyz; statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.– Sunny Khan
2 days ago
Package is used for grouping java types (classes, interfaces, enums etc). So when you use the package in your java program it bind those java types in one package.
– DK Ansh
2 days ago
Package is used for grouping java types (classes, interfaces, enums etc). So when you use the package in your java program it bind those java types in one package.
– DK Ansh
2 days ago
Please read this from oracle for more details information. Packages
– DK Ansh
2 days ago
Please read this from oracle for more details information. Packages
– DK Ansh
2 days ago
add a comment |
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2
Please could you clarify this sentence? " If package abc.xyz; is not removed at the compilation time then it would be the problem when we will use this file at runtime because the runtime engine will also trigger the package abc.xyz; statement bytecode version, so, it would be a problem." What do you mean by "trigger package abc.xyz statement bytecode version"?
– Jon Skeet
2 days ago
I mean that the objective of
package abc.xyz;statement is to create directories and place the.classfiles inside thexyzdirectory, so, the run time will do the same job as the compile time? So, is this not the problem? Because the runtime will say lets create directories because of thepackage abc.xyz;statement, so, this is my understanding, now i don't know what is the scene behind.– Sunny Khan
2 days ago
Let says i have a statement
System.out.print("Hello world");. Now when this program runs theHello Worldwill be printed, right? So lets say i havepackage abc.xyz;statement, Now when this program runs will it again create the directories and .class files? i hope you got me now!!! I am talking about runtime Ok.– Sunny Khan
2 days ago
1
No, it's the compilation process that creates class files. That's entirely separate from what happens when you run the code.
– Jon Skeet
2 days ago
1
"I mean that the objective of package abc.xyz; statement is to create directories and place the .class files inside the xyz directory" - no, it's to specify the package for the classes declared in that source file. It's not "code that runs". It's the compiler that decides what it should do with class files. A different compile might not use the file system at all, but it would still need to know the package of a class.
– Jon Skeet
2 days ago