import java.util.Vector; import java.io.Serializable; import java.lang.Comparable; public class MethodGenerics<typ1> { public typ1 TestMethode(String wert1, typ1 that, String wert2) { return null; } <t extends Vector> t TestMethode2() { return null; } <u extends Vector & Comparable & Serializable> u TestMethode3() { return null; } }