Java Utililty Methods Jar Manifest

List of utility methods to do Jar Manifest

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Description

The list of methods to do Jar Manifest are organized into topic(s).

Method

StringgetManifestValue(JarFile jarFile, String key, String defaultValue)
get Manifest Value 
final Manifest manifest = getManifest(jarFile);
if (manifest == null) {
    return defaultValue;
final Attributes attributes = manifest.getMainAttributes();
final String value = attributes.getValue(key);
if (value == null) {
    return defaultValue;
...
StringgetManifestVersionNumber(File file)
get Manifest Version Number 
JarFile jar = new JarFile(file);
Manifest manifest = jar.getManifest();
String versionNumber = null;
java.util.jar.Attributes attributes = manifest.getMainAttributes();
if (attributes != null) {
    Iterator it = attributes.keySet().iterator();
    while (it.hasNext()) {
        Attributes.Name key = (Attributes.Name) it.next();
...
ObjectgetValueFromAttr(Attributes attributes, String manifestValue)
get Value From Attr 
for (Object key : attributes.keySet()) {
    if (key.toString().equals(manifestValue))
        return attributes.get(key);
return null;
booleanisOSGiManifest(Manifest manifest)
is OS Gi Manifest 
Attributes mainAttributes = manifest.getMainAttributes();
return mainAttributes.containsKey(new Attributes.Name("Bundle-Name"));
PropertiesmanifestToProperties(Attributes d)
manifest To Properties 
Iterator iter = d.keySet().iterator();
Properties result = new Properties();
while (iter.hasNext()) {
    Attributes.Name key = (Attributes.Name) iter.next();
    result.put(key.toString(), d.get(key));
return result;
voidmerge(Manifest into, Manifest from)
Merge entries from two Manifests together, with existing attributes being overwritten. 
Attributes attributes = from.getMainAttributes();
if (attributes != null) {
    for (Map.Entry<Object, Object> attribute : attributes.entrySet()) {
        into.getMainAttributes().put(attribute.getKey(), attribute.getValue());
Map<String, Attributes> entries = from.getEntries();
if (entries != null) {
...
ManifeststripManifest(Manifest manifestIn)
strip Manifest 
Manifest manifestOut = new Manifest(manifestIn);
for (Map.Entry<String, Attributes> entry : manifestIn.getEntries().entrySet()) {
    manifestOut.getEntries().remove(entry.getKey());
return manifestOut;