How to Remove the Last Character from a String in Java

In Java, strings are a sequence of individual characters, each one represented by a byte.

It is very common to need to be able to remove the last character of a string, especially when working with a string from an external source.

In this post, we'll learn how to remove the last character of a string in Java.

How to remove the last character of a string

To remove the last character from a string, the best way is to use the substring method.

This method will return a new string between two indexes that you pass in.

Since we want to exclude the last character, we will want the first index to be 0 and the last index to be the length of the string, minus one.

Let's start with out example string:

JAVA
String string = "Hello World";

Now let's use the substring method to get the string between the indexes 0 and string.length() - 1.

JAVA
String string = "Hello World";
String substring = string.substring(0, string.length() - 1);

System.out.println(substring);

JAVA
Hello Worl

As expected, we get back the string Hello World minus the last character because we excluded the last index.

Keep in mind that because the substring method returns a new string, the original string remains unmodified as it doesn't mutate the original string.

This is useful because it means you can still use the original string in other methods safely.

Conclusion

In this post, we learned how to remove the last character of a string in Java.

Simply use the substring method and pass in the first index and the last index minus 1 to get the string between those indexes.

Thanks for reading and happy coding!

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