ifextend.java

java包与接口的一个简单应用

interface A 
{
	void meth1();    
	void meth2();
}

interface B extends A 
{
	void meth3();
}

class MyClass implements B 
{
	public void meth1() 
	{
		System.out.println("Implement meth1().");
	}
	public void meth2() {
		System.out.println("Implement meth2().");
	}
	public void meth3() {
		System.out.println("Implement meth3().");
	}
}
class IFExtend {
	public static void main(String arg[]) {
		MyClass ob = new MyClass();
		ob.meth1();
		ob.meth2();
		ob.meth3();
	}
}