Java Utililty Methods Jar Entry

List of utility methods to do Jar Entry

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Jar Entry

Description

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

Method

String constructClassName(JarEntry je)
construct Class Name

int n = je.getName().length() - ".class".length();
return je.getName().replace("/", ".").substring(0, n);

JarEntry getJarEntry(JarFile file, String entryName)
Find the specified entry in the specified JAR file

return file.getJarEntry(entryName);

boolean hasClassEntry(JarFile jarFile, String className)
has Class Entry

String path = className.replace('.', '/') + ".class";
return jarFile.getEntry(path) != null;

boolean inClasspath(Collection classpath, JarEntry entry)
in Classpath

for (String s : classpath) {
 if (entry.getName().startsWith(s)) {
 return true;
return false;

boolean isJavaClass(JarEntry je)
is Java Class

return je.getName().endsWith(".class");

boolean isJavaLibrary(JarEntry entry)
is Java Library

return entry.getName().toLowerCase().endsWith(".jar") || entry.getName().toLowerCase().endsWith(".zip");

boolean isNativeLibrary(JarEntry entry)
is Native Library

String name = entry.getName();
int dotSeperatorPosition = name.lastIndexOf('.');
if (dotSeperatorPosition <= 0) {
 return false;
String type = name.substring(dotSeperatorPosition + 1);
if (NATIVE_LIB_FILE_TYPES.contains(type)) {
 return true;
...

String parseSimpleName(JarEntry entry)
Returns the name of a JAR or ZIP entry without the path.

int index = entry.getName().lastIndexOf("/");
String simpleName;
if (index > 0) {
 simpleName = entry.getName().substring(index);
} else {
 simpleName = entry.getName();
if (!simpleName.endsWith(".jar") && !simpleName.endsWith(".zip")) { 
...

String trimEntryName(JarEntry je)
trim Entry Name

String[] s = je.getName().toLowerCase().replace(".htm", "").split("/");
return s[s.length - 1];