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Why does this Java method appear to have two return types?

where Foo is my own class. What is the return type of this method? Why does it seem to have two return types? Answer No, you don’t have two return types. It’s a generic method you are seeing. <E extends Foo> → You are declaring a generic type for your method; List<E> → This is your return type. Your method

Exception in thread “main” java.awt.AWTError: Assistive Technology not found

How to solve this error? Exception in thread “main” java.awt.AWTError: Assistive Technology not found: at java.awt.Toolkit.loadAssistiveTechnologies( at java.awt.Toolkit.getDefaultToolkit( at java.awt.Window.getToolkit( at java.awt.Window.init( at java.awt.Window.( at java.awt.Frame.( at java.awt.Frame.( at javax.swing.JFrame.( at FirstJavaProject.( at FirstJavaProject.main( It occurs during the execution of following program: My JDK_HOME/jre/lib/ file has the following content: Answer For future reference, one of the more common causes

JavaFX 2.2 TextField maxlength

I am working on a JavaFX 2.2 project and I have a problem using the TextField control. I want to limit the number of characters that a user will be able to enter into each TextField. However I can’t …

Does Parameterized JUnit test correct with `mvn test`?

I’m just implemented a JUnit test case using JUnit 4.11 following the example: I create a maven project using And this test case: But when I test it using mvn test , maven said: How to make it work? Answer The problem is the naming convention of maven which is based on maven-surefire-plugin which needs a naming like,