Java中的equels和==比较

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public class EquelsDemo {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubInteger obj01 = new Integer(10);Integer obj02 = new Integer(20);Integer obj03 = new Integer(10);Integer obj04 = obj02;System.out.println(obj01.equals(obj03)+"  ---->  obj01.equels(obj03)  ?");System.out.println((obj01 == obj03) + " ------->  obj01 == obj03 ?");System.out.println("----------------------------");System.out.println(obj02.equals(obj04) + " ------>  obj02.equels(obj04)  ?");System.out.println((obj02 == obj04 ) + " ----->  obj02 == obj04  ?");}}

运行结果

true  ---->  obj01.equels(obj03)  ?
false ------->  obj01 == obj03 ?
----------------------------
true ------>  obj02.equels(obj04)  ?
true ----->  obj02 == obj04  ?

分析

object类的equels方法就是比较他们的值是否相等

而逻辑运算符==是将两个变量的内存地址进行比较

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