How to share symbols in java?

Question

I have two java programs (classes), both in a directory called java_weirdness.

Here they are below :

MyClass

package java_weirdness;
public class MyClass{
    public int num;
    public MyClass(int initialNum) {
        num = initialNum;
    }
}

MyLauncher

package java_weirdness;

public class MyLauncher {

    public static void main(String[] args) {
        MyClass new_member = new MyClass(3);
    }
}

When I compile MyLauncher.java, I get the following errors, even though I clearly imported it:

MyLauncher.java:7: error: cannot find symbol
        MyClass new_member = new MyClass(3);
        ^
  symbol:   class MyClass
  location: class MyLauncher
MyLauncher.java:7: error: cannot find symbol
        MyClass new_member = new MyClass(3);
                                 ^
  symbol:   class MyClass
  location: class MyLauncher
2 errors

What is the proper way to access MyClass while in MyLauncher? Thank you.

To start with I suggest you use an IDE which will set up and build your project for you. You have enough to learn without struggling with the tools. — Peter Lawrey, Sep 01 '15 at 07:37
Compiled both. `javac MyClass.java` compiles fine. `javac MyLauncher.java` is what gives the error. Using Sublime. — makansij, Sep 01 '15 at 07:39
You will need to set `-cp` in the `java` command to that `MyClass` is in the class path of `MyLauncher` during run time. And Sublime is a text editor, not an IDE. — Nicholas Robinson, Sep 01 '15 at 07:43
Something else I noticed.. You are calling ` MyClass new_member = new myClass(3);` that needs to be MyClass new_member = new MyClass(3); — Nicholas Robinson, Sep 01 '15 at 07:44
@NicholasRobinson that's the output maybe of a previous javac — AlexGreg, Sep 01 '15 at 07:45
@AlexGreg I can see that's the output, not sure what you are telling me. — Nicholas Robinson, Sep 01 '15 at 07:46
Yeah. I mean, they're in the same directory `java_weirdness`, and the class files are in the same directory too: `MyClass.class`. — makansij, Sep 01 '15 at 07:52

score 1 · Accepted Answer · edited May 23 '17 at 10:26

1

go up one directory then do

javac java_weirdness/*.java

and after

java java_weirdness.MyLauncher

form more info look here

PS: we're too much IDE dependent xD

edited May 23 '17 at 10:26

Community

1
1

answered Sep 01 '15 at 07:53

AlexGreg

838
10
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weird, so you have to compile the entire package? – makansij Sep 01 '15 at 07:56
try to remove the package declaration and it will work on your way – AlexGreg Sep 01 '15 at 07:58
1

Don't get too much into the habit of omitting the package declaration. For any serious software this is "bad style", in particular: classes in the "default package" (if a package declaration is missing) cannot be made visible to classes within a proper package. The Java Language Specification even allows different default packages which creates further confusion ... so, take it as convenience for smallest toy applications only. -- OTOH, even with packages you can compile classes one at a time, provided required classes have already been compiled, the point is to include the package name. – Stephan Herrmann Sep 05 '15 at 21:10

How to share symbols in java?

MyClass

MyLauncher

1 Answers1