You can use the enable method to do so. Enable gives you the liberty of hiding a test case such that it wont be executed.
Here is an example:-
package testNG;
import org.testng.annotations.Test;
public class Test2 {
@Test (enabled = true )
public void g1()
{
System.out.println("test case 1");
}
@Test (enabled = true )
public void g2()
{
System.out.println("test case 2");
}
@Test (enabled = false )
public void g3()
{
System.out.println("test case 3");
}
@Test (enabled = true )
public void g4()
{
System.out.println("test case 4");
}
}