fun_class.java

String int 字符串常量池 包装类型 函数参数 值传递引用传递 的 内存分配例子——源码 代码段： public static void fun_ref (Ref_test ref_

package string_int;
class fun_class
{
	public static void change(Point pt)
	{
		pt.x=pt.x+pt.y;
		pt.y=pt.x-pt.y;
		
	}
	public static void main(String[]args)
	{
		Point pt=new Point();
		pt.x=3;
		pt.y=4;
		fun_class.change(pt);
		System.out.println("x="+pt.x+";"+"y="+pt.y+" ");
	}
}

class Point
{
	int x;
	int y;
	
}