单项选择题
Given the following code:
1) class Parent {
2) private String name;
3) public Parent(){}
4) }
5) public class Child extends Parent {
6) private String department;
7) public Child() {}
8) public String getValue(){ return name; }
9) public static void main(String arg[]) {
10) Parent p = new Parent();
11) }
12) }
Which line will cause error?()
A. line 3
B. line 6
C. line 7
D. line 8
E. line 10
相关考题
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单项选择题
AButtonispositionedinaFrame.OnlyheightoftheButtonisaffectedbytheFramewhilethewidthisnot.Whichlayoutmanagershouldbeused?()
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?()
A. Cause error during compilation.
B. south east
C. south to north east to west
D. south to north east
E. south east to west -
多项选择题
public class Parent { int change() {…} } class Child extends Parent { } Which methods can be added into class Child?()
A. public int change(){}
B. int chang(int i){}
C. private int change(){}
D. abstract int chang(){}
