UUID工具类及使用

1.工具类:

package UUIdtest;

import java.util.UUID;

public class UUIDUtil {
    public static String getUUID() {
        return UUID.randomUUID().toString();
    }

}

 2.使用

package UUIdtest;

import org.junit.Test;

public class TestUUID {
    @Test
    public void test3(){
        System.out.println(UUIDUtil.getUUID().replace("-", ""));
        System.out.println(UUIDUtil.getUUID());
        System.out.println(UUIDUtil.getUUID());
    }
}