جافا Java

❓ Stream على مصفوفة Stream over arrayint[] a = {1,2,3}; int[] b = java.util.Arrays.stream(a).map(x -> x * 2).toArray(); System.out.println(a[1] + "," + b[1]);

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Anonymous Quiz

46 voters489 views21:33

جافا Java

❓ ترتيب كتل static مع الوراثة
Static init order with inheritance

class A { static { System.out.print("A"); } }
class B extends A { static { System.out.print("B"); } }
new B();

466 views21:33

جافا Java

❓ ترتيب كتل static مع الوراثة Static init order with inheritanceclass A { static { System.out.print("A"); } } class B extends A { static { System.out.print("B"); } } new B();

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Anonymous Quiz

26%

55%

19%

❤1

53 voters504 views21:33

جافا Java

❓ خطأ فهرسة في حلقة
Index error in loop

int[] a = {1,2,3};
for (int i = 0; i <= a.length; i++) {
  System.out.print(a[i]);
}

456 views21:33

جافا Java

❓ خطأ فهرسة في حلقة Index error in loopint[] a = {1,2,3}; for (int i = 0; i <= a.length; i++) { System.out.print(a[i]); }

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Anonymous Quiz

40%

Prints 123

47%

Prints 123 then throws ArrayIndexOutOfBoundsException

13%

compile error

53 voters479 views21:33

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❓ ما ناتج الكود التالي؟
What is the output of the following code?

int x = 5;
if (x > 3) x++;
if (x == 6) x += 2;
System.out.println(x);

439 views21:33

جافا Java

❓ ما ناتج الكود التالي؟ What is the output of the following code?int x = 5; if (x > 3) x++; if (x == 6) x += 2; System.out.println(x);

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Anonymous Quiz

18%

11%

70%

👍1

71 voters464 views21:33

جافا Java

❓ ما مجموع الأعداد من 1 إلى 3؟
What does this loop print?

int sum = 0;
for (int i = 1; i <= 3; i++) {
  sum += i;
}
System.out.println(sum);

421 views21:33

جافا Java

❓ ما مجموع الأعداد من 1 إلى 3؟ What does this loop print?int sum = 0; for (int i = 1; i <= 3; i++) { sum += i; } System.out.println(sum);

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Anonymous Quiz

29%

63%

62 voters443 views21:33

جافا Java

❓ ما ناتج السويتش بدون break؟
What is the output (no breaks before case 3)?

int n = 2;
switch (n) {
  case 1: System.out.print('A');
  case 2: System.out.print('B');
  case 3: System.out.print('C'); break;
  default: System.out.print('D');
}

434 views21:33

جافا Java

❓ ما ناتج السويتش بدون break؟ What is the output (no breaks before case 3)?int n = 2; switch (n) { case 1: System.out.print('A'); case 2: System.out.print('B'); case 3: System.out.print('C'); break; default: System.out.print('D'); }

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Anonymous Quiz

60 voters471 views21:33

جافا Java

❓ أي overload يُستدعى؟
Which overload is invoked?

void print(int x) { System.out.println("int"); }
void print(Integer x) { System.out.println("Integer"); }

Integer n = null;
print(n);

436 views21:33

جافا Java

❓ أي overload يُستدعى؟ Which overload is invoked?void print(int x) { System.out.println("int"); } void print(Integer x) { System.out.println("Integer"); } Integer n = null; print(n);

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Anonymous Quiz

54 voters479 views21:33

جافا Java

❓ كيف تطبع طول المصفوفة؟
How do you print the array length?

int[] a = {1, 2, 3, 4};
System.out.println( /* ? */ );

414 views07:39

جافا Java

❓ كيف تطبع طول المصفوفة؟ How do you print the array length?int[] a = {1, 2, 3, 4}; System.out.println( /* ? */ );

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Anonymous Quiz

57 voters445 views07:39

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❓ هل يعدّل for-each عناصر المصفوفة؟
Does for-each modify elements?

int[] a = {1, 2, 3};
for (int x : a) { x *= 2; }
System.out.println(a[1]);

404 views07:39

جافا Java

❓ هل يعدّل for-each عناصر المصفوفة؟ Does for-each modify elements?int[] a = {1, 2, 3}; for (int x : a) { x *= 2; } System.out.println(a[1]);

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Anonymous Quiz

55%

37%

38 voters406 views07:39

جافا Java

❓ ما قيمة count بعد استخدام continue؟
What is count after using continue?

int count = 0;
for (int i = 0; i < 5; i++) {
  if (i % 2 == 0) continue;
  count += i;
}
System.out.println(count);

1❤1

385 views07:39

جافا Java

❓ ما قيمة count بعد استخدام continue؟ What is count after using continue?int count = 0; for (int i = 0; i < 5; i++) { if (i % 2 == 0) continue; count += i; } System.out.println(count);

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Anonymous Quiz

56%

24%

20%

41 voters423 views07:39

جافا Java

❓ هل a == b صحيح؟
Is a == b true?

String a = new String("hi");
String b = "hi";
System.out.println(a == b);

390 views07:39

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