publicclassUserAccess {
        // simple validation for user name and password
        publicstaticboolean accessCheck(String userName, String password) {
               if(userName.length() <= 4 || userName.length() > 8 )
                      returnfalse;
               if(password.length() <= 4 || password.length() > 8 )
                      returnfalse;
               if(userName.contains("@"))
                      returnfalse;
               if(password.contains("*"))
                      returnfalse;
               returntrue;
        }
   }

 import java.util.Arrays;
 import java.util.Collection;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.Parameterized;
 import org.junit.runners.Parameterized.Parameters;
 importstaticorg.junit.Assert.assertEquals ;
 
import sample.junit.code.UserAccess;
 
/*
 * JUnit - Parameter test sample
 */
 @RunWith(Parameterized.class)
 publicclassJunitSample {
        privateString user ;
        privateString pwd ;
        privateboolean expected ;
 
        @Parameters
        publicstaticCollection dataGenerate(){
               returnArrays.asList(newObject[][]{
                            {"user01","123456",true},
                            {"user02","123456",true},
                            {"user03","12345678",true}
               });
        }
 
       publicJunitSample(String user,String pwd,boolean expected){
               this.user = user;
               this.pwd = pwd;
               this.expected = expected;
        }
 
        @Test
        publicvoidtestAccessCheck(){
                assertEquals(expected,UserAccess. accessCheck(user, pwd));
        }
 }