StringBuffer类insert(int offset，String s) (StringBuffer Class insert(int offset , String s))

• This method is available in package java.lang.StringBuffer.insert(int offset, String s).

  软件包java.lang.StringBuffer.insert(int offset，String s)中提供了此方法。

• This method is used to insert the string representation with the given object at the specified position.

  此方法用于在指定位置插入具有给定对象的字符串表示形式。

• This method is overridable so it is available in different-2 forms like:

  此方法是可重写的，因此有两种不同的形式可用，例如：

  • StringBuffer insert(int offset , boolean b)
  • StringBuffer insert(int offset , char c)
  • StringBuffer insert(int offset , char[] c) etc

Syntax:

句法：

    StringBuffer insert(int offset , String s){
}

Parameter(s):

参数：

We can pass two or three objects according to our need as a parameter in the method and that object will insert in a sequence at the specified position.

我们可以根据需要传递两个或三个对象作为方法中的参数，并且该对象将按顺序插入到指定位置。

Return value:

返回值：

The return type of this method is StringBuffer that means this method returns a reference to this object.

该方法的返回类型为StringBuffer ，这意味着该方法返回对该对象的引用。

Java程序演示insert()方法的示例 (Java program to demonstrate example of insert() method)

import java.lang.StringBuffer;
public class StringBufferClass {public static void main(String[] args) {StringBuffer sb = new StringBuffer("Java is a programming language : ");
// use insert(int offset ,Boolean b) it will insert the Boolean parameter
// at index 33 as string to the StringBuffer
sb.insert(33, true);
// Display result after inserting
System.out.println("The result will be after inserting Boolean object to the StringBuffer is :" + sb.toString());
sb = new StringBuffer("Version of Java is : ");
// use insert(int offset , int i) it will insert the Integer parameter
// at index 21 as string to the StringBuffer
sb.insert(21, 8);
// Display result after inserting
System.out.println("The result will be after inserting Integer object to the StringBuffer is :" + sb.toString());
}
}

Output

输出量

D:\Programs>javac StringBufferClass.java
D:\Programs>java StringBufferClass
The result will be after inserting Boolean object to the StringBuffer is :Java is a programming language : true
The result will be after inserting Integer object to the StringBuffer is :Version of Java is : 8

翻译自: https://www.includehelp.com/java/stringbuffer-insert-int-offset-string-s-method-with-example.aspx