best place for junit testcase classes

[javalatte]

When you write your junit test classes for your classes that you develop, do you place them under the same package as your classes? what is the commonly practiced convention? For example, if HelloWorld.java is under package javatrng.examples, then should you place HelloWorldTest.java also under javatrng.examples?

[Kishan]

1) Create separate source folders for application code and test code.
Example: In maven projects application code sits in src/main/java and test code sits in src/test/java

2) When you are writing test class for application class better have to same package name for both the classes for ease of maintenance and understanding and accessibility.