referencetest.java

主要是对于JAVA的编程的基本语言 希望能够帮得上你。

package Operator;

import java.awt.Dimension;

/* 
 The equal (=) sign is used for assigning a value to a variable; 
 hence, it is called an assignment operator (赋值运算符). 
 There are actually 12 assignment operators, but the rest are just
 amalgams of the equal sign and other arithmetic operators, 
 as shown in the following:
 =、*=、/=、%=、+=、-=、<<=、>>=、>>>=、&=、^=、|= 
*/

class ReferenceTest {
	public static void main(String[] args) {
		Dimension a = new Dimension(5, 10);
		System.out.println("a.height = " + a.height);
		Dimension b = a;
		b.height = 30;
		System.out.println("a.height = " + a.height + "after change to b");
	}
}