- Java.lang Package classes
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- Java.lang - String
- Java.lang - StringBuffer
- Java.lang - StringBuilder
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- Java.lang - Thread
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- Java.lang - ThreadLocal
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- Java.lang - Void
- Java.lang Package extras
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Java.lang.StringBuffer.insert() Method
Description
The java.lang.StringBuffer.insert(int dstOffset, CharSequence s) method inserts the specified CharSequence into this sequence. The characters of the CharSequence argument are inserted, in order, into this sequence at the indicated offset, moving up any characters originally above that position and increasing the length of this sequence by the length of the argument s.
Declaration
Following is the declaration for java.lang.StringBuffer.insert() method
public StringBuffer insert(int dstOffset, CharSequence s)
Parameters
dstOffset − This is the offset.
s − This is the sequence to be inserted.
Return Value
This method returns a reference to this object.
Exception
IndexOutOfBoundsException − if the offset is invalid.
Example
The following example shows the usage of java.lang.StringBuffer.insert() method.
package com.tutorialspoint; import java.lang.*; public class StringBufferDemo { public static void main(String[] args) { StringBuffer buff = new StringBuffer("tutorials"); System.out.println("buffer = " + buff); CharSequence cSeq = "point"; // insert CharSequence at offset 9 buff.insert(9, cSeq); // prints stringbuffer after insertion System.out.print("After insertion = "); System.out.println(buff.toString()); } }
Let us compile and run the above program, this will produce the following result −
buffer = tutorials After insertion = tutorialspoint