Java/Java Mcq Question Set 3 Sample Test,Sample questions

 Output : public class Test{ public static void main(String args[]){ int i = 1; do{ i--; }while(i > 2); System.out.println(i); }

 Output : public class Test{public static void main(String args[]){int i; for(i = 1; i < 6; i++){if(i > 3) continue ; } System.out.println(i); } }

Choose the correct statement in context of the following program code. public class Test{public static void main(String[] args){double sum = 0; for(double d = 0; d < 10;){d += 0.1; sum += sum + d; }}

Given the following piece of code: public class School{ public abstract double numberOfStudent(); } which of the following statements is true?

How many Constructor String class have?

How many objects will be created? String a = new String("Examveda"); String b = new String("Examveda"); String c = "Examveda"; String d = "Examveda";

How many times will the following code print "Welcome to Gkindiaonline"? int count = 0; do {System.out.println("Welcome to Gkindiaonline"); count++; } while (count < 10);

In java, ............ can only test for equality, where as .......... can evaluate any type of the Boolean expression.

In which area of memory, the system stores parameters and local variables whenever a method is invoked?

int ++a = 100 ; System.out.println( ++a ) ; What will be the output of the above fraction of code ?

int x = 0, y = 0 , z = 0 ; x = (++x + y-- ) * z++; What will be the value of "x" after execution ?

Output : class Num { Num(double x ){ System.out.println( x ) ; } } public class Test extends Num {public static void main(String[] args){ Num num = new Num( 2 ) ;} }

Output : class Numbers{ public static void main(String args[]){ int a=20, b=10; if((a < b) && (b++ < 25)){ System.out.println("This is any language logic"); } System.out.println(b); } }

Output : class Test {public static void main(String args[]){int x=7; if(x==2); // Note the semicolon System.out.println("NumberSeven");System.out.println("NotSeven"); } }

Output : int i = 10; while(i++ <= 10){ i++; } System.out.print(i);

Output : public class Test { public static void main(String args[]){ int a = 42; double b = 42.25; System.out.print((a)+" "+(b)); } }

Output : public class Test {public static void main(String... args) throws Exception{Integer i = 34; int l = 34;if(i.equals(l)){System.out.println("true"); }else{System.out.println("false"); } } }

Output : public class Test{ public static void main (String[] args){ String test = "a1b2c3"; String[] tokens = test.split("\d"); for(String s: tokens) system.out.print(s); } }

Output : public class Test{ public static void main(String args[]){ String str1 = "one";String str2 = "two" ; System.out.println(str1.concat(str2)); } }

Output : public class Test{ public static void main(String args[]){System.out.println( Math.floor( Math.random( ) ) ) ; } }

Output : public class Test{ public static void main(String... args){ int a=5 , b=6, c=7; System.out.println("Value is "+ b + c); System.out.println(a + b + c); System.out.println("String " + (b+c)); }

Output : public class Test{ public static void main(String... args){int x =5; x *= 3 + 7; System.out.println(x); } }

Output : public class Test{ public static void main(String[] args){ int x = 3, y = 4; switch(x + 3){ case 6: y = 0; case 7: y = 1; default: y += 1; } } }

Output : public class Test{public static void main(String args[]){ int i, j; for(i=1, j=0;i<10;i++) j += i; System.out.println(i); } }

Output : public class Test{public static void main(String args[]){int i = 0, j = 5 ; for( ; (i < 3) && (j++ < 10) ; i++ ){System.out.print(" " + i + " " + j ); }System.out.print(" " + i + " " + j ); }

Output : public class Test{public static void main(String[] args){String value = "abc"; changeValue(value); System.out.println(value); }public static void changeValue(String a){a = "xyz"; }}

Output : public class Test{static public void main(String args[]){ //line 2 int i, j; for(i=0; i<3; i++){for(j=1; j<4; j++){ i%=j; System.out.println(j); } } }

public class MyClass{ } For the above class(MyClass) what is the correct way of declaring constructor?

public class Test { } What is the prototype of the default constructor?

Select from among the following character escape code which is not available in Java.

The class string belongs to ................. package.

The finalize() method is called just prior to

The implicit return type of a constructor is

The main method should be static for the reason

The variables declared in a class for the use of all methods of the class are called

What is Math.floor(3.6)?

What is the value of a[1] after the following code is executed? int[] a = {0, 2, 4, 1, 3}; for(int i = 0; i < a.length; i++) a[i] = a[(a[i] + 3) % a.length];

What will be output? String S1 = "S1 ="+ "123"+"456"; String S2 = "S2 ="+(123+456);

What will be the output? if(1 + 1 + 1 + 1 + 1 == 5){ System.out.print("TRUE"); } else{ System.out.print("FLASE"); }

What will be the return type of a method that not returns any value?

Which of the following class definitions defines a legal abstract class?

Which of the following for loops will be an infinite loop?

Which of the following is the correct expression that evaluates to true if the number x is between 1 and 100 or the number is negative?

Which of the following options is the best for generating random integer 0 or 1?

Which of these is a legal definition of a method named gkindiaonline assuming it throws IOException, and returns void. Also assume that the method does not take any arguments. Select the one correct

___________ method cannot be overridden.