Java Programming Quiz

Which component is responsible to optimize reusable byte code conversion to machine code?

Predict the output: public static void main(String args[]) { int age; System.out.println(age); }

Which of these values can a boolean variable contain?

identifiers cannot start with __________

Predict the output: public class Demo{ public static void main (string args[]){ int a =10,b=9; System.out.println(a

public static void main(String args[]){ int i=10; if(i) System.out.println("Hello"); else System.out.println("Bye"); }

If an arithmetic expression contains variables of int , byte , and short data types , what will be the data type of its result?

public static void main(String[] args){ int num1 = 20; double num2 = 0; if(num1 >= 20) num2=1.5; if(num1<30) num2 = 2; System.out.println("Value of num2 is "+ num2); }

Can we compare int variable with a Boolean variable?

What is the output of the below Java code snippet?

char ch = 'A';//ASCII 65

int a = ch + 1;

ch = (char)a;

System.out.println(ch);