java uuid静态方法_Java UUID compareTo（）方法与示例

java uuid静态方法

UUID类compareTo()方法 (UUID Class compareTo() method)

compareTo() method is available in java.util package.
compareTo()方法在java.util包中可用。
compareTo() method is used to compare two UUID objects or in other words, it is used to compare this UUID with the given object (ob).
compareTo()方法用于比较两个UUID对象，换句话说，它用于将该UUID与给定对象(ob)比较。
compareTo() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
compareTo()方法是一种非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。
compareTo() method does not throw an exception at the time of comparing two objects.
比较两个对象时， compareTo()方法不会引发异常。

Syntax:

句法：

    public int compareTo(UUID ob);

Parameter(s):

参数：

UUID ob – represents the UUID object to be compared with this UUID.
UUID ob –表示要与此UUID比较的UUID对象。

Return value:

返回值：

The return type of the method is int, it returns any one of the given three values [0,1 and -1],

方法的返回类型为int ，它返回给定的三个值[0,1和-1]中的任何一个，

When (This UUID) < (UUID ob), it returns -1.
当(This UUID)<(UUID ob)时，它返回-1。
When (This UUID) == (UUID ob), it returns 0.
当(This UUID)==(UUID ob)时，它返回0。
When (This UUID) > (UUID ob), it returns 1.
当(此UUID)>(UUID ob)时，它将返回1。

Example:

例：

// Java program to demonstrate the example 
// of int compareTo(UUID ob) method of UUID 
import java.util.*;
public class CompareToOfUUID {
public static void main(String[] args) {
// Instantiate UUID    
UUID uuid1 = UUID.fromString("46400000-8cc0-11bd-b43e-10d46e4ef14d");
UUID uuid2 = UUID.fromString("56500000-8cd0-10bd-b65e-10d46e4ef14d");
// By using compareTo() method is
// to compare this object with the given object
int result = uuid1.compareTo(uuid2);
System.out.println("uuid1.compareTo(uuid2): " + result);
}
}

Output

输出量