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Програмування мовою Java
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1 package newpack;
2 class A {
3 int a, b;
4 void sum () {
5 System.out.print (a + b);
6}
7}
8 class B extends A {
9 ...
10}
11 ...
(Java)
abstract class A {
abstract void method (int a, int b);
}
class B extends A {
int x;
int y;
void method (int a, int b) {
x = a;
y = b;
}
}
Які нижчеперелічені фрагменти коду неприпустимі?
public class SomeClass {
public static void main (String [] args) {
SomeClass c = new SomeClass ();
c.f1 (1, 1);
}
public void f1 (byte b, char c) {
System.out.println ( "1");
}
public void f1 (byte b, byte c) {
System.out.println ( "2");
}
public void f1 (char b, char c) {
System.out.println ( "3");
}
public void f1 (char b, byte c) {
System.out.println ( "4");
}
}
(Java)
class abcPoint {
abcPoint (int a, int b) {
x = a;
y = b;
}
int x, y;
...
}
Вкажіть результат виконання наступного фрагмента коду:
abcPoint p = new abcPoint (5,3), p1 = p;
px = 4;
System.out.println (p1.x);
(Java)
import java.awt.Point;
public class Obscuring {
static Point Test = new Point (3,2);
public static void main (String s []) {
System.out.println (Test.x);
}
}
class Test {
static int x = -5;
}
(Java)
2 ...
3 double m;
4 double s () {
5 return g * this.m;
6}
7}
1 public class SomeClass {
2 public static void main (String [] args) {
3 String [] arr = { "H", "e", "l", "l", "o", "", "W", "o", "r", "l", "d", "!" };
4 String result = "";
5 int i = 0;
6 ...
7 System.out.print (arr [i]);
8 }
9 }
(Java)
Wolf w = new Wolf ();
Animal a = (Animal) w;
Rabbit r = (Rabbit) a;
(Java)