学步园

class Base{
	public void func1(){
		System.out.println("Base::func1");
	}
	public static void funcstatic(){
		System.out.println("Base::func1_static");
	}
	
}
class Derived extends Base{
	public void func1(){
		System.out.println("derived::func1");
	}
	public static void funcstatic(){
		System.out.println("derived::func1_static");
	}
}
public class Test{
	public static void func(StringBuffer x,StringBuffer y){
		x.append(y);
		y=x;
	}
	public static void main(String[] args) {
		StringBuffer x=new StringBuffer("A");
		StringBuffer y=new StringBuffer("B");
		func(x,y);
		System.out.println(x);
		System.out.println(y);
		Base p=new Derived();
		p.func1();
		p.funcstatic();
		Derived d=new Derived();
		d.func1();
		d.funcstatic();
	}
}

AB
B
derived::func1
Base::func1_static
derived::func1
derived::func1_static