hashCode()方法源码分析

执行代码

public class Demo06 {
    public static void main(String[] args) {
        String s="hello";
        System.out.println(s.hashCode());
    }
}
以下是hashCode()源码
public int hashCode() {
        int h = hash;
        if (h == 0 && value.length > 0) {
            char val[] = value;

            for (int i = 0; i < value.length; i++) {
                  h = 31 * h + val[i];
            }
            hash = h;
        }
        return h;
    }