Java 确定两个对象是否包含相同的值
使用equals（）方法。
实例源码：
源代码：
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// 来自 nowjava2
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public class Main {4
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public static void main(String[] args) {6
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// Compare if two objects contain the same values9
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Team team1 = new Team();11
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Team team2 = new Team();13
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team2.setName("Bates");16
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team2.setCity("York");18
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if (team1.equals(team2)){20
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System.out.println("These object references contain the same values.");22
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} else {24
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System.out.println("These object references do NOT contain the same values.");26
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}28
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// Compare two objects to see if they refer to the same object31
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Team team3 = team1;33
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Team team4 = team1;35
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if (team3.equals(team4) ) {38
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System.out.println("These object references refer to the same object.");40
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} else {// from nowjava - 时代Java42
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System.out44
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.println("These object references do NOT refer to the same object.");46
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}48
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}51
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}53
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class Team {56
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private String name;58
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private String city;60
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private volatile int cachedHashCode = 0;62
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/**65
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* @return the name67
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*/69
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public String getName() {71
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return name;73
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}75
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/**78
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* @param name80
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* the name to set82
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*/84
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public void setName(String name) {86
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this.name = name;88
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}90
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/**93
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* @return the city95
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*/97
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public String getCity() {99
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return city;101
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}103
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/**106
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* @param city108
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* the city to set110
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*/112
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public void setCity(String city) {114
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this.city = city;116
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}118
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public String getFullName() {121
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return this.name + " - " + this.city;123
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}125
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@Override128
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public boolean equals(Object obj) {130
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if (this == obj) {133
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return true;135
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}137
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if (obj instanceof Team) {139
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Team other = (Team) obj;141
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return other.getName().equals(this.getName())143
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