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September 28, 2017 Xiaokai He

For Java developers on Visual Studio Code, the Language Support for Java(TM) by Red Hat extension has been great for providing language features such as IntelliSense and project support. At the same time, we've also heard feedback that users would also like Java debugging. Today, we're excited to announce our ongoing collaboration with Red Hat and enabling Java developers to debug Java applications with a new lightweight Java Debugger for Visual Studio Code based on Java Debug Server.

Note: Both the Java Debugger for Visual Studio Code and Java Debug Server will be open sourced shortly after the initial release.

To help Java developers to get started with VS Code quickly, we also created a Java Extension Pack which includes both the Language Support for Java(TM) by Red Hat and Java Debugger for Visual Studio Code extensions so you won't need to search for them individually. This is just the start to creating a modern workflow for Java and we'll be adding more features and extensions to the Java Extension Pack in the future.

Getting started

To get started:

1. In Visual Studio Code, open the Extensions view (⇧⌘X (Windows, Linux Ctrl+Shift+X)).
2. Type 'java' to filter the list.
3. Find and install the Java Extension Pack or standalone Java Debugger for Visual Studio Code extension if you already have Language Support for Java(TM) by Red Hat installed.

You also install the Java Extension Pack directly from this blog post:

After reloading VS Code, open a folder that contains a Java project and follow below steps:

Visual Studio 2017 For Mac Debug Operation Failed Windows 7

1. Prepare the project. Open a .java file, and the Java extensions will be activated. Maven, Gradle and Eclipse projects are supported. Project build is automatically handled by the extensions, no need to be triggered manually.
2. Start debugging. Switch to Run view (⇧⌘D (Windows, Linux Ctrl+Shift+D)) and open launch.json to add a debug configuration for Java.
3. Fill in the mainClass for Launch setting or hostName and port for Attach.
4. Set your breakpoint and hit F5 to start debugging.

Supported features

In this release, we support the following features:

• Launch/Attach - You can either launch the Java project within VS Code or attach to any running JVM process in debug mode, locally or remotely.
• Breakpoints - Conditional breakpoints by Hit Count is supported and can easily be set using the inline breakpoint settings window. This allows you to conveniently add conditional breakpoints to your code, directly in the source viewer, without requiring a modal window. Break on exceptions is also supported.
• Control flow - Including Pause, ContinueF5, Step overF10, Step intoF11, Step outShift+F11
• Data inspection - When you're stopped at a breakpoint, the debugger has access to the variable names and values that are currently stored in memory. Inspect/Watch/Set Variables are supported.
• Diagnostics - The CALL STACK panel shows the call stack of your program and allows you to navigate through the call path of each captured allocation. Multi-threaded debugging is supported by parallel stacks.
• Debug Console - The Debug Console lets you see information from both stdout and stderr.

Future releases will include expression evaluation and hot code replacement.

Next Steps

• Checkout more about Java on VS Code

Feedback

Please share your feedback and ask questions to help us improve. You can contact us on Gitter.

Visual Studio 2017 For Mac Debug Operation Failed Windows 10

Xiaokai He, @JavaOnAzure