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Java - replace last n characters in string
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In this article, we would like to show you how to replace last n characters in string in Java.
Quick solution:
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String text = "ABCD";2
int n = 3;3
String replacement = "123";4
String result = text.substring(0, text.length() - n) + replacement;5
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System.out.println(result); // A123
In this example, we use substring() method to remove last n = 3 characters from the text string, then we add the replacement at their place.
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public class Example {2
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public static void main(String[] args) {4
String text = "ABCD";5
int n = 3;6
String replacement = "123";7
String result = text.substring(0, text.length() - n) + replacement;8
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System.out.println("Original string: " + text); // ABCD10
System.out.println("Modified string: " + result); // A12311
}12
}Output:
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Original string: ABCD2
Modified string: A123Note:
The
replacementlength doesn't have to be equal ton. You can remove the lastncharacters from the end of the string and add any number of characters instead.
