java - JUnit test failed to launch -

i doing first junit test project not working.

i did 2 methods 2 test.

my console giving me message " failed launch test" !

how can solve ?

package test;  public class junit {      public string concentrate (string one, string two) {          return 1 + two;     }      public int multiply (int number1, int number2 ) {         return number1*number2;     } } 

test cases:

package test;  import junit.framework.testsuite;  import org.junit.runner.runwith; import org.junit.runners.suite; import org.junit.runners.suite.suiteclasses;  @runwith(suite.class) @suiteclasses({ concatetest.class, multiplytest.class }) public class alltests extends testsuite {  } 

multiply test:

package test;  import static org.junit.assert.*; import org.junit.test;  public class multiplytest {      @test     public void testmultiply() {         junit test = new junit();         int result = test.multiply(3, 4);         assertequals(12, result);     } } 

you have no methods annotated @test . try add method annotated @test :

@test public void test(){    assert.asserttrue(multiply(2, 2) == 4); } 

cause in actual code test nothing