包中的类如何在同一包的静态方法中使用其他类？

Question

I have classes A and C in package abc. A has a static method showA(). Now I want to use this method in C.How do I do this?

package abc;
public class A{
    public void static showA()
        System.out.println("I am in A");
    }
}

package abc;
public class C{
    public void static showC(){
        A.showA();
        System.out.println("I am in C");
    }
}

Now while compiling C it shows that, cannot find variable A. How to resolve this?

Answer 1

You didn't give exact information about what you did, but I fear that you are compiling the classes one by one with calls like

javac abc/A.java
javac abc/B.java

You have 2 possibilities: The first one is to tell the compiler to compile both classes. That way both classes will be known:

javac abc/A.java abc/B.java

Another possibility is to tell the compiler where the required class file can be found. As A.Java is compiled to A.class with the same base directory, you could do the calls:

javac abc/A.java
javac -cp . abc/B.java

With -cp you add the local directory to the classpath so A.class is on the classpath.