Java split用法及注意事项

【1】单个符号作为分隔符
String address="上海|上海市|闵行区|吴中路";
String[] splitAddress=address.split("\\|"); //如果以竖线为分隔符，则split的时候需要加上两个斜杠【\\】进行转义
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

String address="上海*上海市*闵行区*吴中路";

String[] splitAddress=address.split("\\*");

System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

String address="上海:上海市:闵行区:吴中路";
String[] splitAddress=address.split("\\:");
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

String address="上海.上海市.闵行区.吴中路";
String[] splitAddress=address.split("\\.");
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

String address="上海^上海市^闵行区^吴中路";
String[] splitAddress=address.split("\\^");
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

String address="上海@上海市@闵行区@吴中路";
String[] splitAddress=address.split("@");
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

String address="上海,上海市,闵行区,吴中路";
String[] splitAddress=address.split(",");
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

【2】多个符号作为分隔符

String address="上海^上海市@闵行区#吴中路";
String[] splitAddress=address.split("\\^|@|#");
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

***************************格式 小提示***************************************************

String address = new String("192.168.13.240");
String[] str = address.split("\\.");
for(String s : str){
System.out.println(s);
}

输出格式：
192
168
13
240
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

输出格式：上海上海市闵行区吴中路
*****************************************************************

总结：（1）split表达式，其实就是一个正则表达式。* ^ | 等符号在正则表达式中属于一种有特殊含义的字符，如果使用此种字符作为分隔符，必须使用转义符即\\加以转义。

（2）如果使用多个分隔符则需要借助 | 符号，如【2】所示，但需要转义符的仍然要加上分隔符进行处理。

原文链接：http://blog.sina.com.cn/s/blog_b6487d470101g0hp.html