Output window steals focus from terminal during mvn install

[IzakMarais]

When I run mvn clean install from the integrated terminal the focus jumps to the output window halfway during the install. It always happens when maven is busy with the step

 --- maven-compiler-plugin:3.7.0:compile (default-compile) @ [...] ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 19 source files...

The errors in the output window look like:

[Error - 11:15:31] 12 Oct 2017 11:03:39 AM JavaBuilder handling CoreException
File not found:<path-to-my-class-being-compiled>.class.
org.eclipse.core.runtime.CoreException: File not found: <path-to-my-class-being-compiled>.class.
	at org.eclipse.core.internal.filesystem.Policy.error(Policy.java:45)
	at org.eclipse.core.internal.filesystem.local.LocalFile.openInputStream(LocalFile.java:406)
	at org.eclipse.core.internal.localstore.FileSystemResourceManager.read(FileSystemResourceManager.java:849)
	at org.eclipse.core.internal.resources.File.getContents(File.java:277)
	at org.eclipse.jdt.internal.core.util.Util.getResourceContentsAsByteArray(Util.java:1135)
	at org.eclipse.jdt.internal.core.builder.IncrementalImageBuilder.writeClassFileCheck(IncrementalImageBuilder.java:889)
	at org.eclipse.jdt.internal.core.builder.IncrementalImageBuilder.writeClassFileContents(IncrementalImageBuilder.java:831)
	at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.writeClassFile(AbstractImageBuilder.java:860)
	at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.acceptResult(AbstractImageBuilder.java:191)
	at org.eclipse.jdt.internal.compiler.Compiler.processCompiledUnits(Compiler.java:593)
	at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:462)
	at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:417)
	at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:368)
	at org.eclipse.jdt.internal.core.builder.IncrementalImageBuilder.compile(IncrementalImageBuilder.java:330)
	at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:305)
	at org.eclipse.jdt.internal.core.builder.IncrementalImageBuilder.build(IncrementalImageBuilder.java:135)
	at org.eclipse.jdt.internal.core.builder.JavaBuilder.buildDeltas(JavaBuilder.java:267)
	at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:195)
	at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:735)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:206)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:246)
	at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:301)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:304)
	at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:360)
	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:383)
	at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:142)
	at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:232)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)
Caused by: java.io.FileNotFoundException: T<path-to-my-class-being-compiled>class (The system cannot find the file specified)
	at java.io.FileInputStream.open0(Native Method)
	at java.io.FileInputStream.open(FileInputStream.java:195)
	at java.io.FileInputStream.<init>(FileInputStream.java:138)
	at org.eclipse.core.internal.filesystem.local.LocalFile.openInputStream(LocalFile.java:401)
	... 28 more

Environment

• Operating System: Windows 8.1
• JDK version: 1.8.0_144
• Visual Studio Code version: 1.17.1
• Java extension version: 0.11.0

[fbricon]

Duplicate of #314. The output focus issue should be dealt with #326