Java.lang.StringBuffer.codePointBefore() Method

Description

The java.lang.StringBuffer.codePointBefore() method returns the character (Unicode code point) before the specified index.The index refers to char values (Unicode code units) and ranges from 1 to length().

Declaration

Following is the declaration for java.lang.StringBuffer.codePointBefore() method

public int codePointBefore(int index)

Parameters

• index -- This is the index following the code point that should be returned.

Return Value

This method returns the Unicode code point value before the given index.

Exception

• NA

Example

The following example shows the usage of java.lang.StringBuffer.codePointBefore() 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);

    // returns the codepoint before index 3
    int retval = buff.codePointBefore(3);
    System.out.println("Character(unicode point) = " + retval);
    
    buff = new StringBuffer("amrood admin ");
    System.out.println("buffer = " + buff);
    // returns the codepoint before index 6
    retval = buff.codePointBefore(6);
    System.out.println("Character(unicode point) = " + retval);
  }
}

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

buffer = TUTORIALS
Character(unicode point) = 84
buffer = amrood admin
Character(unicode point) = 100