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android java split ArrayIndexOutOfBoundsException

用竖 * 分隔字符串运行将抛出java.util.regex.PatternSyntaxException异常,用加号 + 也是如此。
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    String[] aa = "aaa*bbb*ccc".split("*");

    //String[] aa = "aaa|bbb|ccc".split("\\*"); 这样才能得到正确的结果    

    for (int i = 0 ; i <aa.length ; i++ ) {

      System.out.println("--"+aa[i]); 

    }
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