java 如何在java中删除部分字符串？
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How to remove part of the string in java?
提问by Poonam Hoshi
Possible Duplicate:
How do I split a string with any whitespace chars as delimiters?
可能的重复：
如何拆分带有任何空格字符作为分隔符的字符串？
I want to break up a string in java. I have a string "message.txt.cpabe".I want to remove the last portion and only want "message.txt". How do I do it?
我想在java中分解一个字符串。我有一个字符串“message.txt.cpabe”。我想删除最后一部分，只想要“message.txt”。我该怎么做？
回答by Eng.Fouad
String s = "message.txt.cpabe";
int indexOfLast = s.lastIndexOf(".");
String newString = s;
if(indexOfLast >= 0) newString = s.substring(0, indexOfLast);
System.out.println(newString); // prints "message.txt"
回答by Oleksi
I would use LastIndexOf(".")to get the index of that last '.', and then use substring()to cut out the part that you want.
我会使用LastIndexOf(".")来获取最后一个 '.' 的索引，然后使用substring()切出你想要的部分。
回答by ganesshkumar
String str="message.txt.cpabe";
str=str.substring(0,str.lastIndexOf("."));
Try this.
试试这个。
回答by jabal
Probably not what you wanted but certainly what you asked for.. :-)
可能不是您想要的，但肯定是您要求的.. :-)
String original = "message.txt.cpabe";
original = "message.txt";
