What will be the output for the below code?
class A{
public void printValue(){
System.out.println("A");
}
}
class B extends A{
public void printValue(){
System.out.println("B");
}
}
public class Test{
public static void main(String... args){
A b = new B();
newValue(b);
}
public static void newValue(A a){
if(a instanceof B){
((B)a).printValue();
}
}
}A. A
B. B
C. Compilation fails with an error at line 4
D. Compilation fails with an error at line 8
E. None of these
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Determine output:
public class Test{
static int i = 5;
public static void main(String... args){
System.out.println(i++);
System.out.println(i);
System.out.println(++i);
System.out.println(++i+i++);
}
}A. 6 6 6 16
B. 6 7 6 16
C. 5 6 7 16
D. 5 6 6 16
E. None of these
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What will be the output of the following Java code?
class operators
{
public static void main(String args[])
{
int var1 = 5;
int var2 = 6;
int var3;
var3 = ++ var2 * var1 / var2 + var2;
System.out.print(var3);
}
}Select an option to see the answer and solution.
Which of these are selection statements in Java?
A. if()
B. for()
C. continue
D. break
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On applying Left shift operator, <<, on integer bits are lost one they are shifted past which position bit?
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With x = 0, which of the following are legal lines of Java code for changing the value of x to 1?
1. x++;
2. x = x + 1;
3. x += 1;
4. x =+ 1;A. 1, 2 & 3
B. 1 & 4
C. 1, 2, 3 & 4
D. 3 & 2
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Which of the following can be operands of arithmetic operators?
A. Numeric
B. Boolean
C. Characters
D. Both Numeric & Characters
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What will be the output of the following Java program?
class jump_statments
{
public static void main(String args[])
{
int x = 2;
int y = 0;
for ( ; y < 10; ++y)
{
if (y % x == 0)
continue;
else if (y == 8)
break;
else
System.out.print(y + " ");
}
}
}A. 1 3 5 7
B. 2 4 6 8
C. 1 3 5 7 9
D. 1 2 3 4 5 6 7 8 9
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Which operator is used to invert all the digits in a binary representation of a number?
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What will be the output of the following Java program?
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);
}
}A. 0 64
B. 64 0
C. 0 256
D. 256 0
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Which of these statements are incorrect?
A. Equal to operator has least precedence
B. Brackets () have highest precedence
C. Division operator, /, has higher precedence than multiplication operator
D. Addition operator, +, and subtraction operator have equal precedence
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What will be the output of the following Java program?
class comma_operator
{
public static void main(String args[])
{
int sum = 0;
for (int i = 0, j = 0; i < 5 & j < 5; ++i, j = i + 1)
sum += i;
System.out.println(sum);
}
}A. 5
B. 6
C. 14
D. compilation error
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Which of these jump statements can skip processing the remainder of the code in its body for a particular iteration?
A. break
B. return
C. exit
D. continue
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Which of these operators can skip evaluating right hand operand?
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Which of the following is used with the switch statement?
A. Continue
B. Exit
C. break
D. do
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What will be the output of the following Java code?
class Relational_operator
{
public static void main(String args[])
{
int var1 = 5;
int var2 = 6;
System.out.print(var1 > var2);
}
}Select an option to see the answer and solution.
What will be the output of the following Java program?
class increment
{
public static void main(String args[])
{
double var1 = 1 + 5;
double var2 = var1 / 4;
int var3 = 1 + 5;
int var4 = var3 / 4;
System.out.print(var2 + " " + var4);
}
}A. 1 1
B. 0 1
C. 1.5 1
D. 1.5 1.0
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What is the order of precedence (highest to lowest) of following operators?
1. &
2. ^
3. ?:A. 1 > 2 > 3
B. 2 > 1 > 3
C. 3 > 2 > 1
D. 2 > 3 > 1
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What will be the output of the following Java program?
class rightshift_operator
{
public static void main(String args[])
{
int x;
x = 10;
x = x >> 1;
System.out.println(x);
}
}Select an option to see the answer and solution.
Which of these statements are incorrect?
A. Assignment operators are more efficiently implemented by Java run-time system than their equivalent long forms
B. Assignment operators run faster than their equivalent long forms
C. Assignment operators can be used only with numeric and character data type
D. None of the mentioned
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