Java中UUID类的equals()方法用于检查一个UUID与另一个UUID是否相等。如果两个UUID一点一点地完全相同,则该方法返回True。
用法:
public boolean equals(Object uuidObj)
参数:该方法采用一个参数uuidObj与UUID_1进行比较。
返回值:如果两个UUID都相同,则该方法返回true,否则返回false。
以下示例程序旨在说明equals()方法的用法:
示例1:
// Java code to illustrate equals() method
import java.util.*;
public class UUID_Demo {
public static void main(String[] args)
{
// Creating two UUIDs
UUID UUID_1
= UUID
.fromString(
"5fc03087-d265-11e7-b8c6-83e29cd24f4c");
UUID UUID_2
= UUID
.fromString(
"5fc03087-d265-11e7-b8c6-83e29cd24f4c");
// Displaying the UUID values
System.out.println("UUID_1: "
+ UUID_1.clockSequence());
System.out.println("UUID_2: "
+ UUID_2.clockSequence());
// Comparing both the UUIDs
System.out.println("Are both UUID equal: "
+ UUID_1.equals(UUID_2));
}
}
输出:
UUID_1: 14534 UUID_2: 14534 Are both UUID equal: true
示例2:
// Java code to illustrate equals() method
import java.util.*;
public class UUID_Demo {
public static void main(String[] args)
{
// Creating two UUIDs
UUID UUID_1
= UUID
.fromString(
"5fc03087-d265-11e7-b8c6-83e29cd24f4c");
UUID UUID_2
= UUID
.fromString(
"58e0a7d7-eebc-11d8-9669-0800200c9a66");
// Displaying the UUID values
System.out.println("UUID_1: "
+ UUID_1.clockSequence());
System.out.println("UUID_2: "
+ UUID_2.clockSequence());
// Comparing both the UUIDs
System.out.println("Are both UUID equal: "
+ UUID_1.equals(UUID_2));
}
}
输出:
UUID_1: 14534 UUID_2: 5737 Are both UUID equal: false
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注:本文由纯净天空筛选整理自Chinmoy Lenka大神的英文原创作品 UUID equals() Method in Java with Examples。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。