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Small Open Source Java Tools and Libraries
Decompress a ZIP archive
Decompress a zip file with a single line of code using Utils4J
// ZIP archive to decompress
File zipFile = new File("c:/myfile.zip");
// Target directory
File targetDir = new File("c:/test");
// Unzip the content into the target directory
Utils4J.unzip(zipFile, targetDir);
You can find a full example here