An interesting phenomenon in java using split to split strings
下面有段代码:
String str="1#2#3"; String[] strs=str.split("#"); System.out.println(strs.length);
ok,上面这段代码最终输出结果是2,这没有问题,但是如果换成下面的写法呢,请看:
String str="##"; String[] strs=str.split("#"); System.out.println(strs.length);
结果输出是0,如果再换一种写法呢,请看:
String str="1##"; String[] strs=str.split("#"); System.out.println(strs.length);
结果输出是1,那么好了,如果我无论哪种情况都只想要2怎么办,我写了这样一段转换的代码:
String str="##"; str=str.replaceAll("#", "v^#v^"); String[] strs=str.split("#"); for (int i = 0; i < strs.length; i++) { String text=strs[i].replaceAll("v\\^", ""); if("".equals(text)){ text="略"; } System.out.println(text); }
结果:
总结
好了,问题完美解决。以上就是这篇文章的全部内容了,希望本文的内容对大家的学习或者工作能带来一定的帮助,如果有疑问大家可以留言交流。
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