Which is the return type of the method main()? A.int B.void C.Boolean
Which is the return type of the method main()?
A.int B.void
C.Boolean D.static
Which is the return type of the method main()?
A.int B.void
C.Boolean D.static
A、Metaphor
B、Anti-thesis
C、Repetition
D、Alliteration
1)class Person {
2) public void printValue(int i, int j) {/*…*/ }
3) public void printValue(int i) {/*…*/
4) }
5) public class Teacher extends Person {
6) public void printValue() {/*…*/ }
7) public void printValue(int i) {/*…*/}
8) public static void main(String args[]) {
9) Person t = new Teacher();
10) t.printValue(10) ;
11)}
12)}
Which method will the statement on line 10 call?
A.on line 2 B.on line 3
C.on line 6 D.on line 7
A.In Java programming language only allows single inheritance
B.In Java programming language allows a class to implement only one interface
C.In Java programming language a class cannot extend a class and implement a interfacetogether
D.In Java programming language single inheritance makes code more reliable
A.The equals() method determines if reference values refer to the same object
B.The == operator determines if the contents and type of two separate objects match
C.The equals() method returns true only when the contents of two objects match
D.The class File overrides equals() to return true if the contents and type of two separateobjects match
1)public void create() {
2) Vector myVect;
3) myVect = new Vector() ;
4) }
Which of the following statements are true?
A.The declaration on line 2 does not allocate memory space for the variable myVect
B.The declaration on line 2 allocates memory space for a reference to a Vector object
C.The statement on line 2 creates an object of class Vector
D.The statement on line 3 creates an object of class Vector
E.The statement on line 3 allocates memory space for an object of class Vector
class Person {
private int a;
public int change(int m) { return m; }
}
public class Teacher extends Person {
public int b;
public static void main(String arg[]) {
Person p = new Person() ;
Teacher t = new Teacher();
int i ;
// point x
}
}
A.i=m; B.i=b;
C.i = p.a; D.i = p.change(30);
E.i = t.b;
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