Sting中方法举例

package com.liaojianya.chapter2;/** * String一些方法的用法。 * 1)声明一个名为name的String对象，内容是“My name is Networkcrazy”； * 2）输出字符串的长度； * 3）输出字符串的第一个字符； * 4）输出字符串的最后一个字符； * 5）输出字符串的第一个单词； *6） 输出字符串crazy的位置（从0开始编号的位置） * @author LIAO JIANYA * 2016年7月30日 */public class Exercise16_2{public static void main(String[] args){String name = "My name is Networkcrazy";char[] data = name.toCharArray();System.out.println("length of string is : " + data.length);System.out.println("the first character of string is : " + name.charAt(0));System.out.println("the last character of string is : " + name.charAt(data.length - 1));System.out.println("the first word of string is : " + name.substring(0, 2));String data1[] = name.split(" ");System.out.println("the first word of string is : " + data1[0]);System.out.println("the index of \" crazy \" is " + name.indexOf("crazy"));}}

运行结果：

<pre name="code" class="java">length of string is : 23the first character of string is : Mthe last character of string is : ythe first word of string is : Mythe first word of string is : Mythe index of " crazy " is 18