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Java Launcher

  1. Java Launcher Mac
  2. Java Launcher Windows 10
  3. Java Launcher Class

Better yet, the Minecraft launcher automatically downloads the correct version for your system (all those players inadvertently using Java 32-bit on their 64-bit machines should see significant performance boosts thanks to this) and automatically updates it. PojavLauncher is a Minecraft: Java Edition launcher for Android and iOS based on Boardwalk. This launcher can launch almost all available Minecraft versions (from rd-132211 to 21w09a (1.17) snapshot, including Combat Test versions). Modding via Forge and Fabric are also supported. This repository contains source code for Android. Scroll to download section, select suited launcher type and click 'Download'. Once download is completed Drag & Drop launcher to preferred folder (e.g. Double click on the launcher file Minecraft.exe or Minecraft.jar. Give launcher few seconds to download needed files, 5. Enter your username and click 'Enter'. The Launcher provides you with a convenient way to access any release of the Site Management Portal (SMP) and System Configuration Tool (SCT) user interfaces. It also provides a simple method of creating bookmarks for any of your website links. Minecraft 1.16.4 Java Edition Download. Another update with bugfixes and minor changes is ready for installation for Minecraft fans — as always, it features fewer crashes and certain small improvements. In general, there are not so many fixes, but some of them are interesting — for example, Social Interactions.

Visual Studio Code allows you to debug Java applications through the Debugger for Java extension. It's a lightweight Java debugger based on Java Debug Server, which extends the Language Support for Java by Red Hat.

Here's a list of supported debugging features:

  • Launch/Attach
  • Breakpoints
  • Exceptions
  • Pause & Continue
  • Step In/Out/Over
  • Variables
  • Call Stacks
  • Threads
  • Debug Console
  • Evaluation
  • Hot Code Replace

The Java debugger is an open-source project, which welcomes contributors to collaborate through GitHub repositories:

If you run into any issues when using the features below, you can contact us by clicking the Report an issue button below.

Install

For the debugger to work, you also need to have the Language Support for Java(TM) by Red Hat extension installed. To make it easier, there is a Java Extension Pack, which bundles the Language Support for Java(TM) by Red Hat, the Debugger for Java and several other popular Java extensions.

You can manually install the extension pack from the Extensions view (⇧⌘X (Windows, Linux Ctrl+Shift+X)) by typing vscode-java-pack in the search box. You will also be prompted to install the Java Extension Pack when you edit a Java file in VS Code for the first time.

For more details, please read Java tutorial.

Configure

By default, the debugger will run out-of-box by automatically finding the main class and generate the default configuration for you to launch your application.

If you would like to create your configuration and save it, you can click the create a launch.json file link in the Run view where you will also find the Debug and Run buttons.

The launch.json file is located in a .vscode folder in your workspace (project root folder) or in your user settings or workspace settings.

It's possible to create multiple debugging configurations for your project and select the desired one to run.

If you want to debug current file, there is a convenient setting, so the editor will choose currently active file as the entry point.

Not

For more details on how to create the launch.json, please read Launch configurations; for more details on configuraiton options for Java, please read Configuration options.

Use

To run and debug your Java application, there are several entry points for starting a debugging session.

CodeLens

You will find Run|Debug on the CodeLens of your main() function.

You can disable the CodeLens if you prefer, with the Enable Run Debug CodeLens setting. While CodeLens is disabled, you can still access the Run|Debug actions by hovering over your main() function.

Context menu

Another way to start debugging is to right-click a Java file in the File Explorer or editor and select Run or Debug in the context menu.

Java launcher mac

Pressing F5

Pressing F5, the debugger will automatically find the entry point of your project and start debugging. You can also start a debugging session from the Run menu or the Run view opened by the Run icon in the Activity Bar on the side of VS Code. See more at Debugging in VS Code.

Debugging single files

VS Code can run and debug single Java files without any project.

Debugging external files

The Java debugger also supports external source files. This lets you debug third-party classes when they are inside a JAR or a source attachment. Set your breakpoints in those classes before you start debugging. You can also attach missing source code with a zip/jar file using the Context menu Attach Source action.

Java 9 and newer versions are supported with VS Code Java Debugger as well.

Threads

You can see all the running threads in the Call Stack pane and work with individual thread using the context menu.

Debug session inputs

The default Debug Console in VS Code doesn't support inputs. If your program need inputs from a terminal, you can use the Integrated Terminal (⌃` (Windows, Linux Ctrl+`)) within VS Code or an external terminal to launch it.

Step filtering

Step filter is supported by the extension to filter out types that you do not want to see or step through while debugging. With this feature, you can configure the packages to filter within your launch.json so they could be skipped when you step through.

Expression evaluation

The debugger also lets you evaluate expressions in the WATCH window as well as the Debug Console. You can also use this feature for conditional breakpoint setting.

Currently, the VS Code Java Debugger uses the Integrated Terminal as the default console, which doesn't support expression evaluation. In order for the console to use this feature, you need to change the console to use the Internal Console in launch.json.

If you'd like to use that setting each time you launch a Java program, you can configure it as a global user setting with java.debug.settings.console.

Conditional breakpoint

With the help of expression evaluation, the debugger also supports conditional breakpoint. You can set your breakpoint to break when expression evaluates to true.

Java Launcher Mac

Data breakpoint

You can have the debugger break when a variable change its value. Note that the data breakpoint can only be set inside a debug session. This means you need to launch your application and break on a regular breakpoint first. You can then pick a field in the VARIABLES view and set a data breakpoint.

Hot Code replacement

Another advanced feature the debugger supports is 'Hot Code' replacement. Hot code replacement (HCR) is a debugging technique whereby the Java debugger transmits new class files over the debugging channel to another Java Virtual Machine (JVM). HCR facilitates experimental development and fosters iterative trial-and-error coding. With this new feature, you can start a debugging session and change a Java file in your development environment, and the debugger will replace the code in the running JVM. No restart is required, which is why it's called 'hot'. Below is an illustration of how you can use HCR with Debugger for Java in VS Code.

You may use the debug setting java.debug.settings.hotCodeReplace to control how to trigger Hot Code replacement. The possible setting values are:

  • manual - Click the toolbar to apply the changes (default).
  • auto - Automatically apply the changes after compilation.
  • never - Disable Hot Code replacement.

Logpoints

Logpoints is also supported by Java Debugger. Logpoints allow you to send output to debug console without editing code. They're different from breakpoints because they don't stop the execution flow of your application.

Configuration options

There are many options and settings available to configure the debugger. For example, configuring the current working directory (cwd) and environment variables is easily done with launch options.

Consult the documentation for the Language Support for Java by Red Hat extension for help with setting up your project.

For many commonly used setups, there are samples available in VS Code Java Debugger Configuration. The document explains how the Java debugger automatically generates configurations for you, and if you need to modify them, how to do so with Main class, different arguments, environment, attaching to other Java processes, and usage of more advanced features.

Below are all the configurations available for Launch and Attach. For more information about how to write the launch.json file, refer to Debugging.

Launch

  • mainClass (required) - The fully qualified class name (for example [java module name/]com.xyz.MainApp) or the java file path of the program entry.
  • args - The command-line arguments passed to the program. Use '${command:SpecifyProgramArgs}' to prompt for program arguments. It accepts a string or an array of string.
  • sourcePaths - The extra source directories of the program. The debugger looks for source code from project settings by default. This option allows the debugger to look for source code in extra directories.
  • modulePaths - The modulepaths for launching the JVM. If not specified, the debugger will automatically resolve from current project.
  • classPaths - The classpaths for launching the JVM. If not specified, the debugger will automatically resolve from current project.
  • encoding - The file.encoding setting for the JVM. If not specified, 'UTF-8' will be used. Possible values can be found in Supported Encodings.
  • vmArgs - The extra options and system properties for the JVM (for example -Xms<size> -Xmx<size> -D<name>=<value>), it accepts a string or an array of string.
  • projectName - The preferred project in which the debugger searches for classes. There could be duplicated class names in different projects. This setting also works when the debugger looks for the specified main class when launching a program. It is required when the workspace has multiple Java projects, otherwise the expression evaluation and conditional breakpoint may not work.
  • cwd - The working directory of the program. Defaults to ${workspaceFolder}.
  • env - The extra environment variables for the program.
  • stopOnEntry - Automatically pause the program after launching.
  • console - The specified console to launch the program. If not specified, use the console specified by the java.debug.settings.console user setting.
    • internalConsole - VS Code debug console (input stream not supported).
    • integratedTerminal - VS Code Integrated Terminal.
    • externalTerminal - External terminal that can be configured in user settings.
  • shortenCommandLine - When the project has long classpath or big VM arguments, the command line to launch the program may exceed the maximum command-line string limitation allowed by the OS. This configuration item provides multiple approaches to shorten the command line. Defaults to auto.
    • none - Launch the program with the standard command line 'java [options] classname [args]'.
    • jarmanifest - Generate the classpath parameters to a temporary classpath.jar file, and launch the program with the command line 'java -cp classpath.jar classname [args]'.
    • argfile - Generate the classpath parameters to a temporary argument file, and launch the program with the command line 'java @argfile [args]'. This value only applies to Java 9 and higher.
    • auto - Automatically detect the command-line length and determine whether to shorten the command line via an appropriate approach.
  • stepFilters - Skip specified classes or methods when stepping.
    • classNameFilters - Skip the specified classes when stepping. Class names should be fully qualified. Wildcard is supported.
    • skipSynthetics - Skip synthetic methods when stepping.
    • skipStaticInitializers - Skip static initializer methods when stepping.
    • skipConstructors - Skip constructor methods when stepping.

Attach

  • hostName (required) - The host name or IP address of remote debuggee.
  • port (required) - The debug port of remote debuggee.
  • timeout - Time out value before reconnecting, in milliseconds (default to 30000 ms).
  • sourcePaths - The extra source directories of the program. The debugger looks for source code from project settings by default. This option allows the debugger to look for source code in extra directories.
  • projectName - The preferred project in which the debugger searches for classes. There could be duplicated class names in different projects. It is required when the workspace has multiple Java projects, otherwise the expression evaluation and conditional breakpoint may not work.
  • stepFilters - Skip specified classes or methods when stepping.
    • classNameFilters - Skip the specified classes when stepping. Class names should be fully qualified. Wildcard is supported.
    • skipSynthetics - Skip synthetic methods when stepping.
    • skipStaticInitializers - Skip static initializer methods when stepping.
    • skipConstructors - Skip constructor methods when stepping.

User Settings

  • java.debug.logLevel: Minimum level of debugger logs that are sent to VS Code, defaults to warn.
  • java.debug.settings.showHex: Show numbers in hex format in Variables, defaults to false.
  • java.debug.settings.showStaticVariables: Show static variables in Variables, defaults to false.
  • java.debug.settings.showQualifiedNames: Show fully qualified class names in Variables, defaults to false.
  • java.debug.settings.showLogicalStructure: Show the logical structure for the Collection and Map classes in Variables, defaults to true.
  • java.debug.settings.showToString: Show 'toString()' value for all classes that override 'toString' method in Variables, defaults to true.
  • java.debug.settings.maxStringLength: The maximum length of strings displayed in Variables or Debug Console. Strings longer than this limit will be trimmed. The default is 0, which means no trim is performed.
  • java.debug.settings.hotCodeReplace: Reload the changed Java classes during debugging, defaults to manual. Make sure java.autobuild.enabled is not disabled for VSCode Java. See the Hot Code Replace wiki page for more information about usages and limitations.
    • manual - Click the toolbar to apply the changes.
    • auto - Automatically apply the changes after compilation.
    • never - Never apply the changes.
  • java.debug.settings.enableHotCodeReplace: Enable hot code replace for Java code. Make sure the auto build is not disabled for VS Code Java. See the Hot Code Replace wiki page for more information about usages and limitations.
  • java.debug.settings.enableRunDebugCodeLens: Enable the CodeLens provider for the run and debug buttons over main entry points, defaults to true.
  • java.debug.settings.forceBuildBeforeLaunch: Force building the workspace before launching java program, defaults to true.
  • java.debug.settings.console: The specified console to launch a Java program, defaults to integratedTerminal. If you want to customize the console for a specific debug session, please modify the console configuration in launch.json.
    • internalConsole - VS Code debug console (input stream not supported).
    • integratedTerminal - VS Code Integrated Terminal.
    • externalTerminal - External terminal that can be configured in user settings.

Troubleshooting

If you encounter issues when using the debugger, a detailed troubleshooting guide can be found in the vscode-java-debug GitHub repository.

Common issues explained include:

  • Java Language Support extension fails to start.
  • Build failed, do you want to continue?
  • *.java isn't on the classpath. Only syntax errors will be reported.
  • Program Error: Could not find or load main class X.
  • Program throws ClassNotFoundException.
  • Failed to complete hot code replace.
  • Please specify the host name and the port of the remote debuggee in the launch.json.
  • Failed to evaluate. Reason: Cannot evaluate because the thread is resumed.
  • Cannot find a class with the main method.
  • No delegateCommandHandler for vscode.java.startDebugSession when starting Debugger.
  • Failed to resolve classpath.
  • Request type 'X' is not supported. Only 'launch' and 'attach' are supported.

Feedback and questions

You can find the full list of issues at Issue Tracker. You can submit a bug or feature suggestion and participate in the community driven vscode-java-debug Gitter channel.

Next steps

Read on to find out about:

  • Debugging - Find out how to use the debugger in VS Code with your project for any language.

And for Java:

  • Java Testing - Test Java within VS Code with the Java Test Runner extension.
  • Java Extensions - Learn about more useful Java extensions for VS Code.

PojavLauncher_iOS

Minecraft: Java Edition launcher for iOS, based on PojavLauncher Android.

Navigation

LauncherLauncher

Introduction

  • This is an attempt to get Minecraft Java run on a jailbroken iOS.
  • Minimum requirements: device running iOS 12 or newer.

Building

Requirements:

  • Mac OS X (tested: 10.15)
  • XCode (tested: 11.7.0)
  • JDK 8 installed
  • gradle to build Java part.
  • cmake, wget, ldid, dpkg and fakeroot to package. Run in this directory

How can it work?

  • Use OpenJDK 16 from Procursus to get real Java environment.
  • Use MetalANGLE for OpenGL ES -> Metal translator.
  • Use GL4ES for OpenGL -> OpenGL ES translator.
  • Use our LWJGL3 iOS port.
  • Use same launch method as PojavLauncher Android.

Current status

  • Java Runtime Environment: OpenJDK 16.
  • LWJGL3 iOS port: works
  • OpenGL: GL4ES
  • Did Minecraft recognize OpenGL?
  • OpenAL: use @kcat's openal-soft
  • Input pipe implementation
  • Account authentication (partial).
  • Does it work? Partial.
  • Currently, only Minecraft 1.14+ fully works.
  • Forge won't work, but Fabric and OptiFine will.

Known issues

  • Mojang authentication might not work, but copying logged in account json from Android will work.
  • Camera position will be jumped to random location on first time touch.
  • 1.12.2 and below only render a tiny panorama at bottom left corner.
  • Other versions will crash for various reasons: Narrator crash, etc...
  • It may crash sometimes, but try launch again until you get it works.

Installing OpenJDK 16

For Chimera/Odyssey bootstrap

  • Add Procursus repository (https://apt.procurs.us).
  • Find and install java-16-openjdk.

For other jailbreak bootstrap

  • Download openjdk-16-jre.deb.
  • Install and open Filza File manager.
  • Go to where the .deb file downloaded.
  • Open it and press Install.
  • If everything fine, it will ends up with Setting up ....

Directory locations

Java
  • Account json directory: /var/mobile/Documents/.pojavlauncher/accounts.
  • Minecraft home directory: /var/mobile/Documents/minecraft.
  • Select a version: edit /var/mobile/Documents/minecraft/config_ver.txt, put to Minecraft version want to start.

License

  • PojavLauncher is licensed under GNU GPLv3.

Contributing

Java Launcher Windows 10

Contributions are welcome! We welcome any type of contribution, not only code. Any code change should be submitted as a pull request. The description should explain what the code does and give steps to execute it.

Credits & Third party components and their licenses

Java Launcher Class

  • Contributors of PojavLauncher Android and here.
  • Apache Commons.
  • jsr305
  • org.json
  • Boardwalk (JVM Launcher): Unknown License/Apache License 2.0 or GNU GPLv2.
  • GL4ES by @lunixbochs @ptitSeb: MIT License.
  • MetalANGLE by @kakashidinho and ANGLE team: BSD License 2.0.
  • OpenJDK 16 ported to iOS by @Diatrus: GNU GPLv2 License.
  • LWJGL3: BSD-3 License.
  • LWJGLX (LWJGL2 API compatibility layer for LWJGL3): unknown license.