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Програмування мовою Java
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(Java)
наступних полів потрібно оголосити статичними?
(Java)
int b [] = new int [5];
for (int i = 0; i < = b.length (); i ++) {
b [i] = Math.sqrt (i);
}
(Java)
1 int i = 0;
2 while (i <3) {
3 System.out.print (i);
4 if (i> 1)
5 try {
6 throw new ArithmeticException ( "ex");
7 }
8 finally {
9 System.out.print (i);
10 }
11 catch (ArithmeticException e) {
12 System.out.print (i);
13 break;
14 }
15 i ++;
16 }
abstract class Shape {
double square;
abstract public void setSquare (double s);
}
Які нижчеперелічені фрагменти коду допустимі?
int a = 12;
int i = 4;
try {
while (i> 0) {
System.out.print (a / i);
i--;
}
}
finally {
System.out.print (i);
}
public abstract class SomeClass implements Runnable {
private Object lock = new Object ();
public void lock () {
synchronized (lock) {
try {
lock.wait ();
System.out.print ( "1");
} Catch (InterruptedException e) { }
}
}
public void notifyThread () {
synchronized (lock) {
lock.notify ();
}
}
public void unlock () {
synchronized (lock) {
lock.notify ();
System.out.print ( "2");
}
}
public static void main (String s []) {
SomeClass c = new SomeClass () {
public void run () {
lock ();
}
};
SomeClass c1 = new SomeClass () {
public void run () {
unlock ();
}
};
new Thread (c) .start ();
new Thread (c1) .start ();
c.notifyThread ();
}
}
(Java)
в порівнянні з класом Thread ?
(Java)
if (i == 0)
throw new ClassCastException ( "first");
if (i == 2)
throw new ClassNotFoundException ( "second");