单项选择题
A. FlowLayout
B. CardLayout
C. North and South of BorderLayout
D. East and West of BorderLayout
E. GridLayout
单项选择题 class Parent { String one, two; public Parent(String a, String b){ one = a; two = b; } public void print(){ System.out.println(one); } } public class Child extends Parent { public Child(String a, String b){ super(a,b); } public void print(){ System.out.println(one + " to " + two); } public static void main(String arg[]){ Parent p = new Parent("south", "north"); Parent t = new Child("east", "west"); p.print(); t.print(); } } Which of the following is correct?()
多项选择题 public class Parent { int change() {…} } class Child extends Parent { } Which methods can be added into class Child?()
多项选择题 Whichofthefollowingstatementsarelegal?()