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java学习第九天笔记-方法176-构造方法代码分析-创建string对象的方式

Java学习笔记 String、StringBuffer与StringBuilder（二）

二、StringBuffer类2.1、认识StringBuffer类StringBuffer：代表可变的字符序列，是线程安全，效率低，可对字符串内容进行增删(如append()方法)不会返回新的对象，大多方法与String相同，底层使用的是其父类中的char[]数组存储数据。//StringBuff...

Java学习笔记 String、StringBuffer与StringBuilder（一）

一、String字符串1.1、认识String类String：表示为字符串，可以使用字符串字面值与类实例来给该类进行赋值，底层是使用fina char[] value(常量字符数组)，并且String类是final常量类，无法被继承，无参构造是创建空的字符串。//常量类：无法被继承 public f...

Java学习笔记（十四）：String类

@[toc] String类的概述 String类：代表字符串。是常量，用一对 “” 引起来。它们的值在创建之后不能更改。String是一个final类，不可被继承。String实现了Serializable接口：表示字符串是支持序列化的。实现了Comparable接口...

java学习笔记--String字符串，StringBuffer和StringBuilder总结

String 先来介绍一下字符串的存储字符串相加是通过StringBuffer类的append()和toString()实现的, 而toString()返回的字符串是通过构造函数创建的强调：两个字符串常量相加, 在编译的时候之间改为一个字符串常量. 而字符串引用相加则是调用StringBuff...

JAVA学习笔记--类型转换（父类子类 Object 基本类型 String）拆装箱包装类

最近一段时间忙着学习JAVA，本来net学的也不怎么好，趁着这个机会转下方向学习JAVA。不过.NET core的开源还是有点搞头的，微软了解一下。接下来几天我也会陆续写一些内容关于线程和集合等方面，现在让我来讲一下类型转换的内容吧。衍生知识： 1.基本类型比较用== 而对象比较用equals...

JAVA学习笔记(5)_____String对象比较的一些个人见解

首先，我们来看一段程序 public class StringCompareTest { public static void main(String[] args) { String s1 = "aaa"; String s2 = "aaa"; System.out.println(s1 == s...

【Java学习笔记】由String str=”abc”引出的故事

作者：gnuhpc 出处：http://www.cnblogs.com/gnuhpc/ 话题是由如下的事情引出的： public class StringTest { public static void main(String[] args) { String str1 =...

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