Java用正则表达式拆分字符串

Question

I have a string like "~~banana~apple~". I want to split that string with "~" is seperator and i want last element in the array after split is "" not "apple".

        String fruits = "~~banana~apple~";
        String[] arr = fruits.split("~");
        String last = "";  //Last string i need
        if (arr.length > 0 )
            last =  arr[arr.length-1];

        System.out.println("last: " + last);

//The result

last: apple

//but i want in this case the value of last must be "" because afer "apple" have "~".

Sorry my bad english.

Answer 1

I'm guessing that you are looking for split("~",-1) . By default split removes empty strings ( "" ) from the end, but with negative limit it will leave them.