Enable JUnit.

Disable warnings for unnecessary code. LEAVE ALL OTHER WARNINGS AT THEIR DEFAULT VALUES.

  Go to "Eclipse/Window" > "Preferences" > "Java" > "Compiler" > "Errors/Warnings" > "Unnecessary code"
  Set the following to "Ignore"
    "Value of local variable is not used"
    "Unused private member"

On windows, the "Preferences" option is under "Window" instead of "Eclipse"