个优点: . 以下代码的HashCode是否相同,它们是否是同个对象: . 以下代码的HashCode是否相同,他们是否是同个对象: . 以下代码的HashCode是否相同,他们是否是同个对象: var A = Console.ReadLine(); //输入"abc" var B = Console.ReadLine(); //输入"abc" var A = string.Intern(B); 结果请查看这里…
偶尔看到string hashcode方法如下 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; } 以31为权,每一位为字符的ASCII值进行运算,用自然溢出来等效取模. A…
前言 public class Test { public static void main(String[] args) { String a = "abc"; String b = "abc"; String c = new String("abc"); System.out.println(a==b); System.out.println(a.equals(b)); System.out.println(a==c); System.out…
代码演示 package main import "fmt" import "time" func main() { i := 2 fmt.Print("write ", i, " as ") switch i { case 1: fmt.Println("one") case 2: fmt.Println("two") case 3: fmt.Println("three&q…
String类定义实现了java.io.Serializable, Comparable<String>, CharSequence 三个接口:并且为final修饰. public final class String defined String由char[]数组实现 /** The value is used for character storage. */ private final char value[]; /** Cache the hash code for the strin…
今天的题目是String.StringBuffer和StringBuilder的区别: 首先还是去官方的API看看对这三种类型的介绍吧,Go...... 一.继承类和实现接口情况 1.String类 public final class String extends Object implements Serializable, Comparable<String>, CharSequence 2.StringBuffer类 public final class StringBuffer ex…
