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Java 确定两个对象引用是否指向同一对象

欢马劈雪

工程师 (已认证)

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549

使用==和！=运算符。

实例源码：

源代码：

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public class Main {

public static void main(String[] args) {//nowjava.com - 时  代  Java 提 供

// Compare if two objects contain the same values

Team team1 = new Team();

Team team2 = new Team();

team2.setName("Nicks");

team2.setCity("Main");

if (team1 == team2) {

System.out.println("These object references refer to the same object.");

} else {

System.out

.println("These object references do NOT refer to the same object.");/*nowjava.com 提供*/

}

// Compare two objects to see if they refer to the same object

Team team3 = team1;

Team team4 = team1;

if (team3 == team4) {

System.out.println("These object references refer to the same object.");

} else {

System.out

.println("These object references do NOT refer to the same object.");

}

class Team {

private String name;

private String city;

private volatile int cachedHashCode = 0;

/**

* @return the name

public String getName() {

return name;

}

/**

* @param name

*          the name to set

public void setName(String name) {

this.name = name;

}

/**

* @return the city

public String getCity() {

return city;

}

/**

* @param city

*          the city to set

public void setCity(String city) {

this.city = city;

}

public String getFullName() {

return this.name + " - " + this.city;

}

@Override

public boolean equals(Object obj) {

if (this == obj) {

return true;

}

if (obj instanceof Team) {

Team other = (Team) obj;

return other.getName().equals(this.getName())
/**代码未完, 请加载全部代码(NowJava.com).**/

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编辑于 2020-03-26 09:23:272020-03-26 09:23:27

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