Remove last character from end of a String in Java

This post will discuss how to remove the last character from the end of a String in Java.

1. Using `String.substring()` method

To chop the last character from the string’s end, you can simply make a call to the substring() method with the last index excluded. Here’s a utility method demonstrating this:

public class Main

{

public static String removeLastChar(String str) {

if (str == null || str.length() == 0) {

return str;

}

return str.substring(0, str.length() - 1);

}

public static void main(String[] args) {

String str = "Java8";

System.out.println(removeLastChar((str))); // Java

}

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2. Using `String.replaceFirst()` method

Both replaceFirst() and replaceAll() method accepts regular expression for substring replacement. You can use the regular expression .$ to match with the last character of a string. Here, . matches with any character except a line terminator, and $ matches with the end of a string.

public class Main

{

public static String removeLastChar(String str) {

if (str == null) {

return null;

}

return str.replaceFirst(".$", "");

}

public static void main(String[] args) {

String str = "Java8";

System.out.println(removeLastChar((str))); // Java

}

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3. Using `StringUtils.chop()` method

This post is incomplete without a solution that doesn’t re-invent the wheels. Apache Commons StringUtils class has a chop() method that removes the last part of a String.

import org.apache.commons.lang3.StringUtils;

public class Main

{

public static void main(String[] args) {

String str = "Java8";

System.out.println(StringUtils.chop(str)); // Java

}

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If you have a specific substring to be removed from the end of a string, you may use the removeEnd() method from the StringUtils class.

import org.apache.commons.lang3.StringUtils;

public class Main

{

public static void main(String[] args) {

String str = "Java8";

System.out.println(StringUtils.removeEnd(str, "8")); // Java

}

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That’s all about removing the last character from the end of a String in Java.

Remove last character from end of a String in Java

1. Using String.substring() method

2. Using String.replaceFirst() method

3. Using StringUtils.chop() method

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1. Using `String.substring()` method

2. Using `String.replaceFirst()` method

3. Using `StringUtils.chop()` method