java - 从 Java 中的另一个类访问 UUID

Question

场景如下:我在一个类中生成随机数据，并将其用作同一类方法中的参数。我如何在另一个类中使用完全相同的值？

这是我的类(class)的简化版本:

public class A {
    @Test
    public void aMethod() {     
        RandomStringUUID ruuid = new RandomStringUUID();
        }
}

然后:

public class B { 
        @Test
    public void bMethod() {
        // Want to use ruuid , without instantiating RandomStringUUID 
                // as i dont want new values, i want the one from class A
        }
}

Answer 1

使用静态方法:

public class A {

     private final static RandomStringUUID ruuid = new RandomStringUUID();

     public final static RandomStringUUID getRuuid() {
         return ruuid;
     }

     @Test
     public void aMethod() {     
         RandomStringUUID ruuid = getRuuid();
     }
}

和

public class B { 
    @Test
    public void bMethod() {
         RandomStringUUID ruuid = A.getRuuid();
    }
}