考虑动作事件 ActionEvent,下面哪个方法用于识别受影响的是哪个组件?().
A: Public class getClass()
B: Public Object getSource()
C: Public Component getSource()
D: Public Component getTarget()
E: Public Component getComponent()
F: Public Component getTargetComponent()
A: Public class getClass()
B: Public Object getSource()
C: Public Component getSource()
D: Public Component getTarget()
E: Public Component getComponent()
F: Public Component getTargetComponent()
举一反三
- Which two demonstrate an “is a” relationship？ （） A: public interface Person{} public class Employee extends Person{} B: public interface Shape{} public class Employee extends Shape{} C: public interface Color{} public class Employee extends Color{} D: public class Species{} public class Animal （private Species species；） E: interface Component{} Class Container implements Component （ Private Component[ ] children； ）
- Which one of the following is not the component of Public Interest
- Object 类中定义了以下（ ）方法，此方法将被所有子类继承。 A: public static Class getClass() B: public final Class getClass() C: public final Class getName() D: public Class getName()
- 当触发ActionEvent事件时，getSource方法可以鉴别触发该事件的事件源组件，它的返回类型为( )。 A: Object B: Class C: Component D: Button
- 下面哪个方法不是Object类中定义的方法?( ) A: public boolean equals(Object obj) B: public int compareTo() C: public String toString() D: public int hashCode()