Q.1
Command to run a Java program
  • javaa
  • java
  • jaava
  • jaavaa
Q.2
What will be the output of the following Java program?class mainclass {public static void main(String args[]){char a = 'A';a++;System.out.print((int)a);}}
  • 66
  • 67
  • 65
  • 64
Q.3
What will be the output of the following Java program?class array_output { public static void main(String args[]) { char array_variable [] = new char[10]; for (int i =i <++i) { array_variable[i] = 'i'; System.out.print(array_variable[i] + "" ); i++; } } }
  • i i i i i
  • 0 1 2 3 4
  • i j k l m
  • None of the mentioned
Q.4
Command to compile Java program
  • javax
  • javay
  • javac
  • Java
Q.5
A ___________ file is created after successful compilation of a Java program.
  • Object file
  • Array file
  • Class file
  • String file
Q.6
Which one is a valid declaration of a boolean?
  • boolean b1 = 1;
  • boolean b2 = ‘false’;
  • boolean b3 = false;
  • boolean b4 = ‘true’
Q.7
Java program is
  • Interpreted
  • Compiled
Q.8
Which of these values can a boolean variable contain?
  • True & False
  • 0 & 1
  • Any integer value
  • true
Q.9
The name of the following should be the file name in Java
  • Object Name
  • Variable Nam
  • Class Name
  • Array Name
Q.10
Java is a
  • Procedure Oriented Language
  • Structure Oriented Language
  • Object_Oriented Language
  • Machine Language
Q.11
Which provides runtime environment for java byte code to be executed?
  • JDK
  • JVM
  • JRE
  • JAVAC
Q.12
Java language was initially called as ________
  • Sumatra
  • J++
  • Oak
  • Pine
Q.13
Data type long literals are appended by _____
  • Uppercase L
  • Lowercase L
  • Long
  • Both Uppercase L & Lowercase L
Q.14
Command to execute compiled java program is
  • java
  • javac
  • run
  • javaw
Q.15
String s1 = new String("java");String s2 = new String("JAVA");System.out.println(s1 = s2);
  • JAVA
  • java
  • true
  • false
Q.16
The command javac
  • Converts a java program into binary code
  • Converts a java program into bytecode
  • Converts a java program into machine language
  • None of the above.
Q.17
Which of the following are not Java keywords ?
  • double
  • switch
  • then
  • instanceof
Q.18
String s = "Java"+1+2+"Quiz"+""+(3+4);System.out.println(s);
  • Java3Quiz7
  • Java12Quiz7
  • Java12Quiz34
  • Java3Quiz34
Q.19
String s1 = "abc";String s2 = "def";System.out.println(s1.compareTo(s2));
  • 0
  • true
  • -3
  • false
Q.20
String s = "Java String Quiz";System.out.println(s.substring(5,3));
  • Prints “Str”
  • Runtime Exception
  • IndexOutOfBoundsException Runtime Exception
  • StringIndexOutOfBoundsException Compile-time error
0 h : 0 m : 1 s