java如何截取某一段数据

Question

请教各位大佬，java怎么截取一段数据呢？如下图所示，我需要获取标记的29502，怎么做啊？

文本如下：
.................Total....Dirty....Clean....Dirty.....Size....Alloc.....Free
................------...------...------...------...------...------...------
..Native.Heap....29502....25196.....4284....19241....69120....54625....14494
..Dalvik.Heap....27414....27044......332.....3880....34270....28126.....6144
.Dalvik.Other....10389....10368.......20.......69...........................

Answer 1

不是很理解要做什么, 不过Java截取字符串就是这个操作了

private static void test() {
        String string = ".................Total....Dirty....Clean....Dirty.....Size....Alloc.....Free\n" +
                "................------...------...------...------...------...------...------\n" +
                "..Native.Heap....29502....25196.....4284....19241....69120....54625....14494\n" +
                "..Dalvik.Heap....27414....27044......332.....3880....34270....28126.....6144\n" +
                ".Dalvik.Other....10389....10368.......20.......69...........................";
        /*
         *string.indexOf("29502")是你要截取字符串的开始字符的位置, 结束的位置是开始的位置加要截取的长度
         * string.substring(string.indexOf("29502"), string.indexOf("29502") + 5) 这个就会拿到你要的29502
         */
        System.out.println(string.substring(string.indexOf("29502"), string.indexOf("29502") + 5));
    }