Explore topic-wise MCQs in General Awareness.

 import java.util.*; class LOCALE_CLASS { public static void main(String args[]) { Locale obj = new Locale("PAKISTAN") ; System.out.print(obj.getCountry()); } }  

 import java.util.*; class LOCALE_CLASS { public static void main(String args[]) { Locale obj = new Locale("URDU", "PAKISTAN") ; System.out.print(obj.getCountry()); } }  

 import java.util.*; class hashtable { public static void main(String args[]) { Hashtable obj = new Hashtable(); obj.put("A", new Integer(3)); obj.put("B", new Integer(2)); obj.put("C", new Integer(8)); obj.remove(new String("A")); System.out.print(obj); } }  

 import java.util.*; class hashtable { public static void main(String args[]) { Hashtable obj = new Hashtable(); obj.put("A", new Integer(3)); obj.put("B", new Integer(2)); obj.put("C", new Integer(8)); System.out.print(obj.toString()); } }  

 import java.util.*; class Bitset { public static void main(String args[]) { BitSet obj = new BitSet(5); for (int i = 0; i < 5; ++i) obj.set(i); System.out.print(obj.get(3)); } }  

 import java.util.*; class date { public static void main(String args[]) { Date obj = new Date(); System.out.print(obj); } }  

 import java.util.*; class Bitset { public static void main(String args[]) { BitSet obj1 = new BitSet(5); BitSet obj2 = new BitSet(10); for (int i = 0; i < 5; ++i) obj1.set(i); for (int i = 3; i < 13; ++i) obj2.set(i); obj1.and(obj2); System.out.print(obj1); } }  

 import java.util.*; class Collection_Algos { public static void main(String args[]) { LinkedList list = new LinkedList(); list.add(new Integer(2)); list.add(new Integer(8)); list.add(new Integer(5)); list.add(new Integer(1)); Iterator i = list.iterator(); while(i.hasNext()) System.out.print(i.next() + " "); } }  

 public class MyRunnable implements Runnable { public void run() { // some code here } } 

 class bitwise_operator { public static void main(String args[]) { int var1 = 42; int var2 = ~var1; System.out.print(var1 + " " + var2); } } 

 class bitwise_operator { public static void main(String args[]) { int a = 3; int b = 6; int c = a | b; int d = a & b; System.out.println(c + " " + d); } } 

1. &&
2. ==
3. ?:
4. +=

 int x = 3; int y = 1; if (x = y) /* Line 3 */ { System.out.println("x =" + x); } 

 Float f = new Float("12"); switch (f) { case 12: System.out.println("Twelve"); case 0: System.out.println("Zero"); default: System.out.println("Default"); } 

 int i = 0; while(1) { if(i == 4) { break; } ++i; } System.out.println("i = " + i); 

 public class Delta { static boolean foo(char c) { System.out.print(c); return true; } public static void main( String[] argv ) { int i = 0; for (foo('A'); foo('B') && (i < 2); foo('C')) { i++; foo('D'); } } } 

1. 16*4
2. 16>>2
3. 16/2^2
4. 16>>>2

1. 3/2

2. 3<2

3. 3*4

4. 3<<2

1. f1 == f2
2. f1 == f3
3. f2 == f1[1]
4. x == f1[0]
f5. == f1[0]

 import java.awt.Button; class CompareReference { public static void main(String [] args) { float f = 42.0f; float [] f1 = new float[2]; float [] f2 = new float[2]; float [] f3 = f1; long x = 42; f1[0] = 42.0f; } } 

1. 32/4
2. (8 >> 2) << 4

3. 2^5

4. 128 >>> 2
5. 2 >> 5

 public void foo( boolean a, boolean b) { if( a ) { System.out.println("A"); /* Line 5 */ } else if(a && b) /* Line 7 */ { System.out.println( "A && B"); } else /* Line 11 */ { if ( !b ) { System.out.println( "notB") ; } else { System.out.println( "ELSE" ) ; } } } 

1. byte
2. long
3. char
4. float
5. Short
6. Long

 switch(x) { default: System.out.println("Hello"); } 

 public void test(int x) { int odd = 1; if(odd) /* Line 4 */ { System.out.println("odd"); } else { System.out.println("even"); } } 

 public class While { public void loop() { int x= 0; while ( 1 ) /* Line 6 */ { System.out.print("x plus one is " + (x + 1)); /* Line 8 */ } } } 

 int I = 0; label: if (I < 2) { System.out.print("I is " + I); I++; continue label; } 

 int i = l, j = -1; switch (i) { case 0, 1: j = 1; /* Line 4 */ case 2: j = 2; default: j = 0; } System.out.println("j = " + j); 

 int i = 1, j = 10; do { if(i > j) { break; } j--; } while (++i < 5); System.out.println("i = " + i + " and j = " + j); 

 public class Switch2 { final static short x = 2; public static int y = 0; public static void main(String [] args) { for (int z=0; z < 3; z++) { switch (z) { case x: System.out.print("0 "); case x-1: System.out.print("1 "); case x-2: System.out.print("2 "); } } } } 

 public class SwitchTest { public static void main(String[] args) { System.out.println("value =" + switchIt(4)); } public static int switchIt(int x) { int j = 1; switch (x) { case l: j++; case 2: j++; case 3: j++; case 4: j++; case 5: j++; default: j++; } return j + x; } } 

 public class If2 { static boolean b1, b2; public static void main(String [] args) { int x = 0; if ( !b1 ) /* Line 7 */ { if ( !b2 ) /* Line 9 */ { b1 = true; x++; if ( 5 > 6 ) { x++; } if ( !b1 ) x = x + 10; else if ( b2 = true ) /* Line 19 */ x = x + 100; else if ( b1 | b2 ) /* Line 21 */ x = x + 1000; } } System.out.println(x); } } 

 for (int i = 0; i < 4; i += 2) { System.out.print(i + " "); } System.out.println(i); /* Line 5 */ 

 public class Switch2 { final static short x = 2; public static int y = 0; public static void main(String [] args) { for (int z=0; z < 3; z++) { switch (z) { case y: System.out.print("0 "); /* Line 11 */ case x-1: System.out.print("1 "); /* Line 12 */ case x: System.out.print("2 "); /* Line 13 */ } } } } 

 public class If1 { static boolean b; public static void main(String [] args) { short hand = 42; if ( hand < 50 && !b ) /* Line 7 */ hand++; if ( hand > 50 ); /* Line 9 */ else if ( hand > 40 ) { hand += 7; hand++; } else --hand; System.out.println(hand); } } 

 public class Test { public static void main(String [] args) { int I = 1; do while ( I < 1 ) System.out.print("I is " + I); while ( I > 1 ) ; } } 

 int x = l, y = 6; while (y--) { x++; } System.out.println("x = " + x +" y = " + y); 

 int I = 0; outer: while (true) { I++; inner: for (int j = 0; j < 10; j++) { I += j; if (j == 3) continue inner; break outer; } continue outer; } System.out.println(I); 

 for(int i = 0; i < 3; i++) { switch(i) { case 0: break; case 1: System.out.print("one "); case 2: System.out.print("two "); case 3: System.out.print("three "); } } System.out.println("done"); 

 public class Test { public static void main(String args[]) { int i = 1, j = 0; switch(i) { case 2: j += 6; case 4: j += 1; default: j += 2; case 0: j += 4; } System.out.println("j = " + j); } } 

 boolean bool = true; if(bool = false) /* Line 2 */ { System.out.println("a"); } else if(bool) /* Line 6 */ { System.out.println("b"); } else if(!bool) /* Line 10 */ { System.out.println("c"); /* Line 12 */ } else { System.out.println("d"); } 

 public class Switch2 { final static short x = 2; public static int y = 0; public static void main(String [] args) { for (int z=0; z < 4; z++) { switch (z) { case x: System.out.print("0 "); default: System.out.print("def "); case x-1: System.out.print("1 "); break; case x-2: System.out.print("2 "); } } } } 

 int i = 0, j = 5; tp: for (;;) { i++; for (;;) { if(i > --j) { break tp; } } System.out.println("i =" + i + ", j = " + j); 

 class Output { public static void main(String args[]) { int a = 1; int b = 2; int c; int d; c = ++b; d = a++; c++; b++; ++a; System.out.println(a + " " + b + " " + c); } } 

 class leftshift_operator { public static void main(String args[]) { byte x = 64; int i; byte y; i = x << 2; y = (byte) (x << 2) System.out.print(i + " " + y); } } 

 class rightshift_operator { public static void main(String args[]) { int x; x = 10; x = x >> 1; System.out.println(x); } } 

 class Output { public static void main(String args[]) { int a = 1; int b = 2; int c = 3; a |= 4; b >>= 1; c <<= 1; a ^= c; System.out.println(a + " " + b + " " + c); } } 

 class ternary_operator { public static void main(String args[]) { int x = 3; int y = ~ x; int z; z = x > y ? x : y; System.out.print(z); } } 

 class Output { public static void main(String args[]) { int x , y = 1; x = 10; if (x != 10 && x / 0 == 0) System.out.println(y); else System.out.println(++y); } } 

 class Output { public static void main(String args[]) { boolean a = true; boolean b = false; boolean c = a ^ b; System.out.println(!c); } } 

 class Output { public static void main(String args[]) { int x=y=z=20; } } 

 class Output { public static void main(String args[]) { int a,b,c,d; a=b=c=d=20 a+=b-=c*=d/=20 System.out.println(a+" "+b+" "+c+" "+d); } }