Example usage for java.util.jar JarEntry getCompressedSize

Introduction

In this page you can find the example usage for java.util.jar JarEntry getCompressedSize.

Prototype

public long getCompressedSize() 

Source Link

Document

Returns the size of the compressed entry data.

Usage

From source file:Main.java

public static void main(String[] args) throws IOException {
    JarFile jf = new JarFile("a.jar");
    Enumeration e = jf.entries();
    while (e.hasMoreElements()) {
        JarEntry je = (JarEntry) e.nextElement();
        System.out.println(je.getName());
        long uncompressedSize = je.getSize();
        long compressedSize = je.getCompressedSize();
        long crc = je.getCrc();
        int method = je.getMethod();
        String comment = je.getComment();
        System.out.println(new Date(je.getTime()));
        System.out.println("from  " + uncompressedSize + " bytes to " + compressedSize);
        if (method == ZipEntry.STORED) {
            System.out.println("ZipEntry.STORED");
        } else if (method == ZipEntry.DEFLATED) {
            System.out.println(ZipEntry.DEFLATED);
        }//from   w w w  .ja  v a 2 s.c o  m
        System.out.println("Its CRC is " + crc);
        System.out.println(comment);
        System.out.println(je.isDirectory());

        Attributes a = je.getAttributes();
        if (a != null) {
            Object[] nameValuePairs = a.entrySet().toArray();
            for (int j = 0; j < nameValuePairs.length; j++) {
                System.out.println(nameValuePairs[j]);
            }
        }
        System.out.println();
    }
}

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From source file:Main.java

public static void main(String[] args) throws IOException {

    JarFile jf = new JarFile(args[0]);
    Enumeration e = jf.entries();
    while (e.hasMoreElements()) {
        JarEntry je = (JarEntry) e.nextElement();
        String name = je.getName();
        Date lastModified = new Date(je.getTime());
        long uncompressedSize = je.getSize();
        long compressedSize = je.getCompressedSize();

        System.out.println(lastModified);
        System.out.println(uncompressedSize);
        System.out.println(compressedSize);
    }//from   w w  w  . j a  va  2s .  co m
}

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From source file:MainClass.java

public static void main(String[] args) throws IOException {

    JarFile jf = new JarFile(args[0]);
    Enumeration e = jf.entries();
    while (e.hasMoreElements()) {
        JarEntry je = (JarEntry) e.nextElement();
        String name = je.getName();
        Date lastModified = new Date(je.getTime());
        long uncompressedSize = je.getSize();
        long compressedSize = je.getCompressedSize();

        int method = je.getMethod();

        if (method == ZipEntry.STORED) {
            System.out.println(name + " was stored at " + lastModified);
            System.out.println("with a size of  " + uncompressedSize + " bytes");
        } else if (method == ZipEntry.DEFLATED) {
            System.out.println(name + " was deflated at " + lastModified);
            System.out.println("from  " + uncompressedSize + " bytes to " + compressedSize
                    + " bytes, a savings of " + (100.0 - 100.0 * compressedSize / uncompressedSize) + "%");
        } else {// w  w w. j  a v a 2 s.  c om
            System.out.println(name + " was compressed using an unrecognized method at " + lastModified);
            System.out.println("from  " + uncompressedSize + " bytes to " + compressedSize
                    + " bytes, a savings of " + (100.0 - 100.0 * compressedSize / uncompressedSize) + "%");
        }
    }
}

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From source file:Main.java

private static void process(Object obj) {
    JarEntry entry = (JarEntry) obj;
    String name = entry.getName();
    long size = entry.getSize();
    long compressedSize = entry.getCompressedSize();
    System.out.println(name + "\t" + size + "\t" + compressedSize);
}

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From source file:net.sf.keystore_explorer.crypto.signing.JarSigner.java

private static void writeJarEntries(JarFile jar, JarOutputStream jos, String signatureName) throws IOException {

    for (Enumeration<?> jarEntries = jar.entries(); jarEntries.hasMoreElements();) {
        JarEntry jarEntry = (JarEntry) jarEntries.nextElement();
        if (!jarEntry.isDirectory()) {
            String entryName = jarEntry.getName();

            // Signature files not to write across
            String sigFileLocation = MessageFormat.format(METAINF_FILE_LOCATION, signatureName, SIGNATURE_EXT)
                    .toUpperCase();/*from w  ww.j av  a  2s .co  m*/
            String dsaSigBlockLocation = MessageFormat.format(METAINF_FILE_LOCATION, signatureName,
                    DSA_SIG_BLOCK_EXT);
            String rsaSigBlockLocation = MessageFormat.format(METAINF_FILE_LOCATION, signatureName,
                    RSA_SIG_BLOCK_EXT);

            // Do not write across existing manifest or matching signature files
            if ((!entryName.equalsIgnoreCase(MANIFEST_LOCATION))
                    && (!entryName.equalsIgnoreCase(sigFileLocation))
                    && (!entryName.equalsIgnoreCase(dsaSigBlockLocation))
                    && (!entryName.equalsIgnoreCase(rsaSigBlockLocation))) {
                // New JAR entry based on original
                JarEntry newJarEntry = new JarEntry(jarEntry.getName());
                newJarEntry.setMethod(jarEntry.getMethod());
                newJarEntry.setCompressedSize(jarEntry.getCompressedSize());
                newJarEntry.setCrc(jarEntry.getCrc());
                jos.putNextEntry(newJarEntry);

                InputStream jis = null;

                try {
                    jis = jar.getInputStream(jarEntry);

                    byte[] buffer = new byte[2048];
                    int read = -1;

                    while ((read = jis.read(buffer)) != -1) {
                        jos.write(buffer, 0, read);
                    }

                    jos.closeEntry();
                } finally {
                    IOUtils.closeQuietly(jis);
                }
            }
        }
    }
}

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