Jar

External

• http://java.sun.com/j2se/1.5.0/docs/guide/jar/jar.html

Internal

• Java

Create a JAR from Files Located in a Directory Different from the Current One

Use -C after the JAR name and use . instead of * if you want to include all from <directory-we-want-to-JAR-from>:

jar -C <directory-we-want-to-JAR-from> cfv <JAR-file-name> .

Example:

jar cfv ./target/A.ear -C ./target/ear-A-content .

Update an existing JAR File

jar ufv <jar-file> [-C <some_dir>] .

The command fails if the target JAR does not exist, so it will have to be created with "c".

Extract a Specific File from a JAR

jar xf .../source.jar META-INF/MANIFEST.MF

Do Not Create a Manifest File

jar cfM ...

Create a JAR with a Specific Manifest Content

jar cfm .../<jar-file-name>.jar .../<maifest-file> *

Executable JAR

Executable JAR in META-INF

Main-Class: some.class.Main

Executable JAR in Maven

Maven JAR Plugin - Declaring a Main Class

Executable JAR in ant

<target name="jar" depends="compile">
    <jar destfile="target/tdanalyzer.jar">
        <zipfileset dir="./target/classes" includes="**/*.class"/>
        <manifest>
           <attribute name="Main-Class" value="com.novaordis.universus.tdanalyzer.Main"/>
        </manifest>
    </jar>
</target>