Java.lang.StringBuilder.subSequence() Method

Description

The java.lang.StringBuilder.subSequence() method returns a new character sequence that is a subsequence of this sequence.

Declaration

Following is the declaration for java.lang.StringBuilder.subSequence() method

public CharSequence subSequence(int start, int end)

Parameters

• start -- This is the start index, inclusive.

• end -- This is the end index, exclusive.

Return Value

This method returns the specified subsequence.

Exception

• IndexOutOfBoundsException -- if start or end are negative, if end is greater than length(), or if start is greater than end.

Example

The following example shows the usage of java.lang.StringBuilder.subSequence() method.

package com.tutorialspoint;

import java.lang.*;

public class StringBuilderDemo {

  public static void main(String[] args) {
  
    StringBuilder str = new StringBuilder("administrator");
    System.out.println("string = " + str);

    CharSequence cSeq;
    // returns the specified subSequence
    cSeq = str.subSequence(0,5);

    // print the subsequence
    System.out.println("subSequence = " + cSeq);
  }      
}

Let us compile and run the above program, this will produce the following result:

string = administrator
subSequence = admin