Java jar文件处理

Dealing with Java JAR Files

Result Command

Show help info	jar -h
Create JAR file	jar -cf jar_file_name input_files
Extract JAR file	jar -xf jar_file_name
Extract a file from a JAR file	jar -xf jar_file_name output_files
Get JAR file listing	jar -tf jar_file_name
Update a JAR file	jar -uf jar_file_name input_files
Execute a JAR file	java -jar jar_file_name

» Don't forget to use the path name when accessing a file in an existing JAR file or you'll run into trouble (The file won't be found, obviously).

» Also, if another application must access files within the JAR file, the JAR file must be on the classpath.

» Example:

A:\castor>jar -xf c:\Opt\java_data_binding\castor\castor-0.9.4.3.jar org\exolab\castor\builder\castorbuilder.properties

Extract file castorbuilder.properties from

A:\castor>jar -uf c:\Opt\java_data_binding\castor\castor-0.9.4.3.jar org\exolab\castor\builder\castorbuilder.properties

Upload file A:\castor\org\exolab\castor\builder\castorbuilder.properties to existing castor-0.9.4.3.jar file. The file will be located in the org\exolab\castor\builder directory within the JAR file.