Java将 String 插入到另一个 String 中

假设我们有一个字符串“That’sgood!”在其中我们需要插入文本“no”。因此，结果字符串应为“That’snogood!”-

String str = "Thats good!"; String newSub = "no ";

现在，将在其中插入新子字符串的索引-

int index = 6;

现在插入新的子字符串-

StringBuffer resString = new StringBuffer(str); resString.insert(index + 1, newSub);

现在让我们看一个将字符串插入另一个的示例-

示例

import java.lang.*; public class Main { public static void main(String[] args) { String str = "Thats good!"; String newSub = "no "; int index = 6; System.out.println("初始字符串 = " + str); System.out.println("将插入新字符串的索引 = " + index); StringBuffer resString = new StringBuffer(str); resString.insert(index + 1, newSub); System.out.println("结果字符串 = "+resString.toString()); } }

输出结果

初始字符串 = Thats good! 将插入新字符串的索引 = 6 结果字符串 = Thats no good!