028-Java-019

Java String类

创建

public class StringDemo{ public static void main(String args[]){ char[] helloArray = { 'r', 'u', 'n', 'o', 'o', 'b'}; String helloString = new String(helloArray); System.out.println( helloString ); } } 长度

public class StringDemo { public static void main(String args[]) { String site = "www.runoob.com"; int len = site.length(); System.out.println( "菜鸟教程网址长度 : " + len ); } } 连接

string1.concat(string2);

"我的名字是 ".concat("Tom");

更常用的是使用'+'操作符来连接字符串，如：

"Hello," + " Tom" + "!" public class StringDemo { public static void main(String args[]) { String string1 = "我是："; System.out.println("1、" + string1 + "Tom！"); } }