@@ -0,0 +1,281 @@
+package javat.text;%0A%0Aimport org.junit.Test;%0A%0Apublic class RegexTest %7B%0A    @Test%0A    public void testIndexOf()%7B%0A%09String str = %22%E8%AE%B8  %E6%96%87,%E6%BD%98  %E7%BE%A4%22;%0A%09System.out.println(str.indexOf(%22%5Cu3000%22));%0A%09System.out.println(str.indexOf(%22%5Cu0020%22));%0A%09System.out.println(Integer.toHexString(' '));%0A    %7D%0A%7D%0A

add regextes