Make Temp Jar : Jar File « File Input Output « Java

Make Temp Jar


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public class Main {
  static File makeTempJar(File moduleFile) throws IOException {
    String prefix = moduleFile.getName();
    if (prefix.endsWith(".jar") || prefix.endsWith(".JAR")) { // NOI18N
        prefix = prefix.substring(0, prefix.length() - 4);
    if (prefix.length() < 3) prefix += '.';
    if (prefix.length() < 3) prefix += '.';
    if (prefix.length() < 3) prefix += '.';
    String suffix = "-test.jar"; // NOI18N
    File physicalModuleFile = File.createTempFile(prefix, suffix);
    InputStream is = new FileInputStream(moduleFile);
    try {
        OutputStream os = new FileOutputStream(physicalModuleFile);
        try {
            byte[] buf = new byte[4096];
            int i;
            while ((i = != -1) {
                os.write(buf, 0, i);
        } finally {
    } finally {
    return physicalModuleFile;



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