HowToDoInJava

  • Python
  • Java
  • Spring Boot
  • Dark Mode
Home / Java / String / Get last 4 characters of String in Java

Get last 4 characters of String in Java

Learn how to get last 4 characters of a String or simply any number of last characters of a string in Java.

Get last 4 characters of String – Example

We may need to get last 4 characters when we are dealing with customer sesitive data such as phone numbers or SSN. In this case, we need to display only last 4 characters to mask the sensitive data.

To get substring having last 4 chars first check the length of string. If string length is greater than 4 then substring(int beginIndex) method. This method takes index position as method argument and return the complete string from that specified index.

If string length is less than 4, we can return the complete string as it is.

If data is in not in string form, use String.valueOf() method to convert it to String, first.

Feel free to modify below code if you need to get last n characters (other than 4). Simply replace '4' with desired number. For example, to get last two characters of a string, using method substring(input.length() - 2).

String input = "123456789";		//input string
String lastFourDigits = "";		//substring containing last 4 characters

if (input.length() > 4) 
{
    lastFourDigits = input.substring(input.length() - 4);
} 
else 
{
    lastFourDigits = input;
}

System.out.println(lastFourDigits);

Program output.

6789

Happy Learning !!

Share this:

  • Twitter
  • Facebook
  • LinkedIn
  • Reddit

About Lokesh Gupta

A family guy with fun loving nature. Love computers, programming and solving everyday problems. Find me on Facebook and Twitter.

Comments are closed on this article!

Search Tutorials

String methods

  • String concat()
  • String hashCode()
  • String contains()
  • String compareTo()
  • String compareToIgnoreCase()
  • String equals()
  • String equalsIgnoreCase()
  • String charAt()
  • String indexOf()
  • String lastIndexOf()
  • String intern()
  • String split()
  • String replace()
  • String replaceFirst()
  • String replaceAll()
  • String substring()
  • String startsWith()
  • String endsWith()
  • String toUpperCase()
  • String toLowerCase()

String examples

  • Convert String to int
  • Convert int to String
  • Convert String to long
  • Convert long to String
  • Convert CSV String to List
  • Java StackTrace to String
  • Convert float to String
  • String – Alignment
  • String – Immutable
  • String – StringJoiner
  • Java – Split string
  • String – Escape HTML
  • String – Unescape HTML
  • String – Convert to title case
  • String – Find duplicate words
  • String – Left pad a string
  • String – Right pad a string
  • String – Reverse recursively
  • String – Leading whitespaces
  • String – Trailing whitespaces
  • String – Remove whitespaces
  • String – Reverse words
  • String – Find duplicate characters
  • String – Check empty string
  • String – Get first 4 characters
  • String – Get last 4 characters
  • String – (123) 456-6789 pattern
  • String – Interview Questions

Java Tutorial

  • Java Introduction
  • Java Keywords
  • Java Flow Control
  • Java OOP
  • Java Inner Class
  • Java String
  • Java Enum
  • Java Collections
  • Java ArrayList
  • Java HashMap
  • Java Array
  • Java Sort
  • Java Clone
  • Java Date Time
  • Java Concurrency
  • Java Generics
  • Java Serialization
  • Java Input Output
  • Java New I/O
  • Java Exceptions
  • Java Annotations
  • Java Reflection
  • Java Garbage collection
  • Java JDBC
  • Java Security
  • Java Regex
  • Java Servlets
  • Java XML
  • Java Puzzles
  • Java Examples
  • Java Libraries
  • Java Resources
  • Java 14
  • Java 12
  • Java 11
  • Java 10
  • Java 9
  • Java 8
  • Java 7

Meta Links

  • About Me
  • Contact Us
  • Privacy policy
  • Advertise
  • Guest and Sponsored Posts

Recommended Reading

  • 10 Life Lessons
  • Secure Hash Algorithms
  • How Web Servers work?
  • How Java I/O Works Internally?
  • Best Way to Learn Java
  • Java Best Practices Guide
  • Microservices Tutorial
  • REST API Tutorial
  • How to Start New Blog

Copyright © 2020 · HowToDoInjava.com · All Rights Reserved. | Sitemap

  • Java 15 New Features
  • Sealed Classes and Interfaces
  • EdDSA (Ed25519 / Ed448)