Question

JAVA中怎么向一个字符串的固定位置插入字符串

Answer 1

第一步;找到这个位置,substring()分割为两个字符串
第二步,第一个字符串.concat(要插入的字符串).concat(吼一个字符串),完成

Answer 2

public class Practice{private static void readWord ( String input, String word, int offset, int count ){offset = input.indexOf (word, offset);if (offset != -1){System.out.println (word + " 在第 " + offset + " 个位置出现过.");readWord (input, word, ++offset, ++count);}else{System.out.println (word + " 总共出现了：" + count + " 次.");}}public static void main ( String[] args ){String input = "Look buddy, U got work hard and put yourself to the java, once U learned the heart of java, I can guarantee that U win.";String word = "java";readWord (input, word, 0, 0);}}