The Java Tutorial Fourth Edition: A Short Course on the Basics

Chapter 16. Packaging Programs in JAR Files THIS chapter and the two following chapters discuss deploying your Java applications and applets. Java versions 1.4.2, 1.5.0, and 1.6.0 bundle two deployment technologies: Java Web Start, for d...

Using JAR Files: The Basics JAR files are packaged with the ZIP file format, so you can use them for tasks such as lossless data compression, archiving, decompression, and archive unpacking. These tasks are among the most common uses of JAR files,...

Working with Manifest Files: The Basics JAR files support a wide range of functionality, including electronic signing, version control, package sealing, and others. What gives a JAR file this versatility? The answer is the JAR file's manifest. Th...

Signing and Verifying JAR Files You can optionally sign a JAR file with your electronic "signature." Users who verify your signature can grant your JAR-bundled software security privileges that it wouldn't ordinarily have. Conversely, yo...

Using JAR-Related APIs The Java platform contains several classes for use with JAR files. Some of these APIs are: The java.util.jar package[17][17] docs/api/java/util/jar/package-summary.htmlThe java.net.JarURLConnection class[18][18] docs/api/...

Questions: JAR Files Questions 1.How do you invoke an applet that is packaged as a JAR file?2.What is the purpose of the -e option in a jar command?3.What is the significance of the manifest in a JAR file?4.How do you modify a JAR's manifest fi...