passbyvalue.java

java课件 java课件 java课件 java课件

public class PassByValue {
    public void change(int y){
    	y = y*2;
    	System.out.println("y ="+y);
    }
    public void change(Circle cc){
    	 cc.setRadius(100);
    }
    public static void main(String[]args){
    	PassByValue pv = new PassByValue();
    	int x = 100;
    	pv.change(x);
    	System.out.println("x = "+x);
    	Circle c = new Circle(10);
    	System.out.println("c.Radius="+c.getRadius());
    	pv.change(c);
    	System.out.println("c.Radius="+c.getRadius());
    }
}