[java] How can I edit a .jar file?

A jar file is a zip archive. You can extract it using 7zip (a great simple tool to open archives). You can also change its extension to zip and use whatever to unzip the file.

Now you have your class file. There is no easy way to edit class file, because class files are binaries (you won't find source code in there. maybe some strings, but not java code). To edit your class file you can use a tool like classeditor.

You have all the strings your class is using hard-coded in the class file. So if the only thing you would like to change is some strings you can do it without using classeditor.

Examples related to java

Under what circumstances can I call findViewById with an Options Menu / Action Bar item? How much should a function trust another function How to implement a simple scenario the OO way Two constructors How do I get some variable from another class in Java? this in equals method How to split a string in two and store it in a field How to do perspective fixing? String index out of range: 4 My eclipse won't open, i download the bundle pack it keeps saying error log

Examples related to mobile

How to center a component in Material-UI and make it responsive? NullPointerException: Attempt to invoke virtual method 'int java.util.ArrayList.size()' on a null object reference Asus Zenfone 5 not detected by computer background: fixed no repeat not working on mobile Check box size change with CSS onClick not working on mobile (touch) Sharing link on WhatsApp from mobile website (not application) for Android Bootstrap 3 Slide in Menu / Navbar on Mobile How to create a link for all mobile devices that opens google maps with a route starting at the current location, destinating a given place? Using form input to access camera and immediately upload photos using web app

Examples related to jar

Running JAR file on Windows 10 Add jars to a Spark Job - spark-submit Deploying Maven project throws java.util.zip.ZipException: invalid LOC header (bad signature) java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/JsonFactory Maven Error: Could not find or load main class Where can I download mysql jdbc jar from? Access restriction: The type 'Application' is not API (restriction on required library rt.jar) Create aar file in Android Studio Checking Maven Version Creating runnable JAR with Gradle