Compress Strings in Java

Sheeraz Gul Mar 09, 2022
Compress Strings in Java

Compressing the string is required when we want to save the memory. In Java, the deflater is used to compress strings in bytes.

This tutorial will demonstrate how to compress strings in Java.

Use deflater to Compress Strings in Java

The deflater is an object creator in Java that compresses the input data and fills the specified buffer with compressed data.



class Compress_Class {
    public static void main(String args[]) throws UnsupportedEncodingException {
        // Using the deflater object
        Deflater new_deflater = new Deflater();
        String Original_string = "This is Delftstack ", repeated_string = "";
        // Generate a repeated string
        for (int i = 0; i < 5; i++){
            repeated_string += Original_string;
        // Convert the repeated string into bytes to set the input for the deflator
        // Generating the output in bytes
        byte compressed_string[] = new byte[1024];
        // Storing the compressed string data in compressed_string. the size for compressed string will be 13
        int compressed_size = new_deflater.deflate(compressed_string, 5, 15, Deflater.FULL_FLUSH);
        // The compressed String
        System.out.println("The Compressed String Output: " + new String(compressed_string) + "\n Size: " + compressed_size);
        //The Original String
        System.out.println("The Original Repeated String: " + repeated_string + "\n Size: " + repeated_string.length());

The above code uses deflater to set the input of the string converted to bytes and compress it.


The Compressed String Output: xœ
Size: 15
The Original Repeated String: This is Delftstack This is Delftstack This is Delftstack This is Delftstack This is Delftstack
Size: 95
Author: Sheeraz Gul
Sheeraz Gul avatar Sheeraz Gul avatar

Sheeraz is a Doctorate fellow in Computer Science at Northwestern Polytechnical University, Xian, China. He has 7 years of Software Development experience in AI, Web, Database, and Desktop technologies. He writes tutorials in Java, PHP, Python, GoLang, R, etc., to help beginners learn the field of Computer Science.

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