Java Split string

There are two things to keep in mind when using the String.Split function for string segmentation

1. Use \ \ to escape special characters as separators (for example, if you use \ \ As delimiter, then escape to \\\\)

.$| ()[{^?*+\\

For example, the delimiter string is split here

        String str = "A|b|c";         = Str.split ("\\|" );         // output here 3         for (int i = 0; i < strarr.length; + +i) {        System.out.println (strarr[i]); // output a b c        } here

2. Pay attention to the processing of the last empty character (usually there are some cases when the last data is empty, only a delimiter is left, if not processed, the number of data split will deviate from the expected)

        // Notice there's one more at the end | delimiter        string[] Strarr = Str.split ("\\|" );     // output here 3         for (int i = 0; i < strarr.length; + +i) {        System.out.println (strarr[i]); // output a b c        } here

If you need to keep the data for the last empty character, you need to set the second argument of Split to-1

        String str = "a|b|c|"; // Notice there's one more at the end | delimiter        string[] Strarr = Str.split ("\\|",-1); // This sets the second parameter to-1        // output here 4          for (int i = 0; i < strarr.length; + +i) {        System.out.println (strarr[i]); // empty string        }

Above.

Java Split string