Automata Fix - Unit 1

public class A {

public static void main(String[] args)

{

if (true)

break;

}

}

• Nothing

• Error

public class A {

public static void main(String[] args)

{

System.out.println('j' + 'a' + 'v' + 'a');

}

}

• java

• Some other

public class Demo{

public static void main(String[] arr){

Integer num1 = 100;

Integer num2 = 100;

Integer num3 = 500;

Integer num4 = 500;

if(num1==num2){

System.out.println("num1 == num2");

}

else{

System.out.println("num1 != num2");

}

if(num3 == num4){

System.out.println("num3 == num4");

}

else{

System.out.println("num3 != num4");

}

}

}

• num1 == num2

  num3 == num4

• num1 == num2

  num3 != num4

• num1 != num2

  num3 == num4

• num1 != num2

  num3 != num4

What will be the output of following program ?

public class Prg {

public static void main(String args[]){

System.out.print('A' + 'B');

}

}

• AB

• 195

• 131

• Error

What will be the output of following program?

public class Prg { public static void main(String args[]){ System.out.print(20+ 1.34f + "A" + "B"); }}

• 201.34AB

• 201.34fAB

• 21.34AB

• Error

What will be the output of following program?

public class prg {

public static void main(String[] args) {

System.out.print("Hello");

System.out.println("Guys!");

}

}

• HelloGuys!

• Hello Guys!

• Hello

  Guys!

• Compile with a Warning

String x = new String("xyz");

String y = "abc";

x = x + y;

How many String objects have been created?

• 2

• 3

• 4

• 5

What will be the output of the program?

class Output

{

final static short i = 2;

public static int j = 0;

public static void main(String [] args)

{

for (int k = 0; k < 3; k++)

{

switch (k)

{

case i: System.out.print(" 0 ");

case i-1: System.out.print(" 1 ");

case i-2: System.out.print(" 2 ");

}

}

}

}

• 2 1 0 1 0 0

• 0 1 2 1 2 2

• 2 1 2 0 1 2

• 0 1 2

class TestApp {

public static void main(String[] args) {

for (int index = 0; 1; index++) {

System.out.println("Welcome");

break;

}

}

}

• Welcome

• Welcome Welcome

• Type mismatch error

• Run infinite-times

class TestApp {

int i[] = { 0 };

public static void main(String args[]) {

int i[] = { 1 };

alter(i);

System.out.println(i[0]);

}

public static void alter(int i[]) {

int j[] = { 2 };

i = j;

}

}

What is the output?

• 0

• 1

• 2

• Compilation Error