Java截取字符串的一些常用處理

import java.util.StringTokenizer;
    /** *//**
    public class SplitTest {
    public static void main(String[] args) {
    SplitTest st = new SplitTest();
    // st.splitTest01();
    //st.splitTest02();
    st.StringTokenizierTest();
    }
    public void splitTest01() {
    String s = "01111:aa:哈哈";
    /**//*
    * limit 該值用來限制返回?cái)?shù)組中的元素個(gè)數(shù)
    */
    String[] s1 = s.split(":");
    System.out.println(s1[0]);
    /**//*
    * -1表示如果為空也能區(qū)分出來
    */
    String[] s2 = s.split(":", -1);
    System.out.println(s2[0]);
    String[] s3 = s.split(":", 1);
    System.out.println(s3[0]);
    }
    public void splitTest02() {
    // “.”和“|”都是轉(zhuǎn)義字符，必須得加"\\"
    String s = "bulktree.oakertree.laoshulin";
    String ss = "bulktree|oakertree|laoshulin";
    String sss = "bulktree.oakertree|laoshulin";
    String[] s1 = s.split("\\.");
    System.out.println(s1[0]);
    String[] s2 = ss.split("\\|");
    System.out.println(s2[0]);
    /**//*
    * 如果有多個(gè)分隔符，可以用"|"作為連字符
    */
    String[] s3 = sss.split("\\.|\\|");
    System.out.println(s3[1]);
    }
    /**//*
    * 構(gòu)造字符串的StringTokenizer對象測試
    */
    public void StringTokenizierTest() {
    String s = "I am a student,bulktree";
    StringTokenizer str = new StringTokenizer(s);
    // 返回nextToken方法被調(diào)用的次數(shù),分隔符的數(shù)量
    System.out.println(str.countTokens());
    // 是否有分隔符
    while(str.hasMoreTokens()) {
    System.out.println(str.nextToken());
    }
    }
    }