联合编译-java

MainClass.java

public class MainClass {public static void main(String[] args) {// TODO Auto-generated method stubSystem.out.println("你好，只需编译我");A a=new A ();a.fA();B b=new B();b.fB ();}}

A.java

public class A {void fA(){System.out.println("I am A");}}

B.java

public class B {void fB(){System.out.println("I am B");}}

C.java

public class C {void fC(){System.out.println("I am C");}}

运行结果：

你好，只需编译我
I am A
I am B