java.util.EnumMap.equals(Object o)%uA0方法将指定对象与此映射是否相等比较。这两个对象必须是映射。
声明
以下是java.util.EnumMap.equals()方法的声明
public boolean equals(Object o)
参数
-
o%uA0-- 要进行比较与此映射相等的对象。
返回值
如果指定的对象等于此映射，此方法返回true
异常
-
NA
例子
下面的例子显示java.util.EnumMap.equals()方法的用法。
package com.yiibai import java.util.* public class EnumMapDemo { // create an enum public enum Numbers { ONE, TWO, THREE, FOUR, FIVE } public static void main(String[] args) { EnumMap<Numbers, String> map1 = new EnumMap<Numbers, String>(Numbers.class) EnumMap<Numbers, String> map2 = new EnumMap<Numbers, String>(Numbers.class) // associate values in map1 map1.put(Numbers.ONE, "1") map1.put(Numbers.TWO, "2") map1.put(Numbers.THREE, "3") map1.put(Numbers.FOUR, "4") // associate values in map2 map2.put(Numbers.ONE, "1") map2.put(Numbers.TWO, "2") map2.put(Numbers.THREE, "3") map2.put(Numbers.FOUR, "4") // print the maps System.out.println("map1:" + map1) System.out.println("map2:" + map2) // check for equality between maps boolean equal = map1.equals(map2) // print the result System.out.println("Map1 and map 2 are equal:" + equal) // add one more value in map2 map2.put(Numbers.FIVE, "5") // check for equality between maps equal = map1.equals(map2) // print the result System.out.println("Map1 and map 2 are equal:" + equal) } }
让我们来编译和运行上面的程序，这将产生以下结果：
map1:{ONE=1, TWO=2, THREE=3, FOUR=4} map2:{ONE=1, TWO=2, THREE=3, FOUR=4} Map1 and map 2 are equal:true Map1 and map 2 are equal:false