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java链接列表。等于vs==整数上的运算符

我正在为我编码的LinkedList调试这个contains方法,并且contains方法中没有捕获整数类型30的比较。根据我的理解,==运算符用于比较内存中的地址和。equals运算符用于比较等效性。我搞砸了一点,似乎不明白为什么在比较传递到contains方法的整数值30时,它仍然没有捕捉到输入时与add方法一起添加的整数30

这是密码

列出构建和填充

//constructing the list
MyBag<Integer> bagLinked = new MyBag<>();
DynamicList<Integer> bagListlinked = new LinkedList<>();
bagLinked.setList(bagListlinked);

//adding integers to the list
for (int i=1; i<=3; i++)
    bagLinked.add(i*10);

包含方法

// Integer value "30" is passed into contains method and then contains
//is called for bagLinked List
public boolean contains(T searchElement) {
    boolean elemExists =false;
    LLNode<T> searchedElem = new LLNode<>(searchElement);
    LLNode<T> currentElm = this.head;
    while(currentElm.getObj() != null){
        if(currentElm.equals(searchedElem.getObj())){
            elemExists =true;
            break;
        }
        currentElm = currentElm.nextPointer;
    }//problem with get object its not comparing the value of 30 just the mem address
    return elemExists;
}

节点类

public class LLNode<T> {
    T obj;
    LLNode<T> previousPointer;
    LLNode<T> nextPointer;
    int index;

    public LLNode(T obj){
        this.obj = obj;
        this.index=0;
    }

    public T getObj() {
        return obj;
    }

    public LLNode<T> getPreviousPointer() {
        return previousPointer;
    }

    public LLNode<T> getNextPointer() {
        return nextPointer;
    }

    public int getIndex() {
        return index;
    }

    public void setIndex(int index) {
        this.index = index;
    }
}

共 (1) 个答案

  1. # 1 楼答案

    这里:

    if(currentElm.equals(searchedElem.getObj()))
    

    您正在尝试将节点currentElm与节点内的值searchedElem.getObj()进行比较

    你大概是说

    if (currentElm.getObj().equals(searchElement))