hashCode() is a number which is generated by applying the hash function. Hash Function can be different for each object but can also be same. At the object level,it returns the memory address of the object.

现在我有一个样例程序,我连续运行10次.每次我运行程序,我得到与哈希码相同的值.

如果hashCode()函数返回对象的内存位置,那么java(JVM)在连续运行中如何将对象存储在同一个内存地址？

你能给我一些洞察力和你对这个问题的看法吗？

我正在运行的测试这个行为的程序如下：

public class EqualityIndex {

    private int index;

    public EqualityIndex(int initialIndex) {
       this.index = initialIndex;
    }

    public static void main(String[] args) {
        EqualityIndex ei = new EqualityIndex(2);
        System.out.println(ei.hashCode());
    }

}

每次运行此程序时,返回的哈希码值为4072869.