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  • String 方法

       toCharArray()    字符串转字符数组char[]

    * indexOf('a')  返回指定字符/字符串第一次出现的索引
     * startsWith("a")测定字符串是否以制定字符串开始
     * endsWith("ab")测试字符串是否以指定字符串结束

      split(String regex)   根据给定正则表达式的匹配拆分此字符串。

     1 package stringdemo;
     2 /**
     3  * split(" ")对字符串 切分
     4  * split(String regex) 
     5               根据给定正则表达式的匹配拆分此字符串。
     6  * @author star
     7  *
     8  */
     9 public class StringDemo5 {
    10     public static void main(String[] args) {
    11         
    12         String s = "hello world nihao mysql hadoop java hello world nihao mysql hadoop java hello world nihao mysql hadoop java hello world nihao mysql hadoop java";
    13         String[] strArray = s.split(" ");
    14         for (int syso = 0; syso < strArray.length; syso++) {
    15             System.out.println(strArray[syso]);
    16         }
    17     }
    18 }
    拆分字符串spilt()
     1 package stringdemo;
     2 /**
     3  * indexOf('a')  返回指定字符/字符串第一次出现的索引
     4  * startsWith("a")测定字符串是否以制定字符串开始
     5  * endsWith("ab")测试字符串是否以指定字符串结束
     6  */
     7 public class StringDemo7 {
     8     public static void main(String[] args) {
     9         String s1 = "Haealloworldhelloworldhello";
    10         int index= s1.indexOf("l");
    11         System.out.println(index);
    12         
    13         boolean b = s1.startsWith("H");
    14         System.out.println(b);
    15         
    16         boolean b1 = s1.endsWith("lo");
    17         System.out.println(b1);
    18     }
    19 }
    String方法
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  • 原文地址:https://www.cnblogs.com/star521/p/8883544.html
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