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 : 23
the first character of string is : M
the last character of string is : y
the first word of string is : My
the first word of string is : My
the index of " crazy " is 18