Question

我有一个包含整数列表的类。我想打印不同的整数组。但即使引用变量不同，我的代码也会打印完全相同的数字。这是我的代码：

import java.util.ArrayList;

public class OrderedIntListUtility {
    public static void printContains(OrderedIntList list) {
        for(int i = 0; i < list.orderedIntegerList.length; i++) {
            System.out.print(list.orderedIntegerList[i]);
        }
    }
}

import java.util.ArrayList;
import java.util.Arrays;

public class OrderedIntList {
    static int[] orderedIntegerList;

    public OrderedIntList(int ... elements) {
        orderedIntegerList = elements;
    }

    public OrderedIntList() {
        orderedIntegerList = null;
    }
}

public class TestOrderedIntList {
    public static void main(String[] args) {
        OrderedIntListUtility operate = new OrderedIntListUtility();
        OrderedIntList listOfA = new OrderedIntList(2,3,1,55,77);
        OrderedIntList listOfB = new OrderedIntList(2,3,5,77);
        operate.printContains(listOfA);
        System.out.println();
        operate.printContains(listOfB);

    }
}

问题是operations.printContains（listOfA）打印listOfB orderedIntList。我很迷惑。它们的变量名称不同吗？请帮忙。谢谢！

Answer 1

在课程OrderedIntList中，您static int[] orderedIntegerList;将其更改为int[] orderedIntegerList;，这样就可以了。静态意味着类级别，而不是实例级别

Java：打印出最后一个引用变量

1 个答案: