how to run inidividual test methods in junit4

i'm using eclipse.

when i worked with JUnit3, i able to run the individual test methods
(assume, in NumberTest.java, we have 2 test methods, testAddition()
and testSubsrtact()).
by right click on the method testAddition(), select Run As/JUnit, it
is running only the method testAddition() and not the testSubstract().

when i tried the same by adding JUni4.4.jar in my classpath, it is
running all the test methods. (under non-routed tests).

how to resolve this.