如何在一組自定義對象中查找對象

下面的代碼包含一組CustomObject。我試圖在其中搜索一個對象。如何在一組自定義對象中查找對象

我已經重寫equals（）方法來匹配它與一個特定的領域，我不明白爲什麼它無法找到它。

「XX \ tNot實測值\ TXX」

是越來越印刷代替的

「找到!!」

import java.util.HashSet; import java.util.Set;

public class TestEquals { 

    private static Set<CustomObject> setCustomObjects;  

    public static void main(String[] args){ 
    setCustomObjects = new HashSet<CustomObject>(); 

    setCustomObjects.add(new CustomObject(2, "asas")); 
    setCustomObjects.add(new CustomObject(3, "gdhdf")); 
    setCustomObjects.add(new CustomObject(4, "bnbv")); 
    setCustomObjects.add(new CustomObject(5, "ljhj")); 

    AnotherObject anObj = new AnotherObject(3, 4); 

    if(setCustomObjects.contains(anObj)){ 
     System.out.println("Found!!"); 
    }else{ 
     System.out.println("XX\tNot Found\tXX"); 
    } 
    } 
} 


class CustomObject { 

    public CustomObject(int test, String name) { 
    this.test = test; 
    this.name = name; 
    } 

    private int test; 
    private String name; 

    @Override 
    public boolean equals(Object obj) { 
    if(obj instanceof AnotherObject){ 
     AnotherObject temp = (AnotherObject)obj; 
     System.out.println("test" + temp.getOtherTest()); 
     return this.test == temp.getOtherTest(); 
    } 
    return true; 
    } 

    @Override 
    public int hashCode() { 
    int hash = 22; 
    hash = 32 * hash + this.test; 
    return hash; 
    } 

} 


class AnotherObject { 

    public AnotherObject(int otherTest, double test2) { 
    this.otherTest = otherTest; 
    this.test2 = test2; 
    } 

    private int otherTest; 
    private double test2; 

    public int getOtherTest() { 
    return otherTest; 
    } 
    public void setOtherTest(int otherTest) { 
    this.otherTest = otherTest; 
    } 
}

來源

2013-04-23 user1235555