Q1 Which of these is not a feature of Java?

Q2 What is the purpose of the PATH environment variable in Java?

Q3 In Java, how should class names be written?

Q4 Which of these is a single-line comment in Java?

Q5 What is the default value of a boolean variable in Java?

Q6 What is the result of this operation in Java:
(int)(7.9)?

Q7 Which keyword is used to define a constant variable in Java?

Q8 What is the range of the short data type in Java?

Q9 What will be the output of the following code snippet:
int a = 10;
int b = 20;
System.out.println(a + b);

Q10 What does the following Java code print?
int x = 5;
int y = x++;
System.out.println(y);

Q11 Determine the output:
SET num = 8
IF num MOD 2 = 0
THEN PRINT "Even"
ELSE
PRINT "Odd"

Q12 Identify the error in this code:
int[] nums = new int[2]; nums[0] = 1; nums[1] = 2; nums[2] = 3;

Q13 Which control structure is used to execute a block of code multiple times?

Q14 In a 'switch-case' statement, what is the role of the 'break' keyword?

Q15 What will the following loop print?
for(int i = 0;
i < 3;
i++){
System.out.println(i);
}

Q16 What will this pseudocode output?

SET count = 5 DO PRINT count COUNTDOWN count

Q17 Identify the error in this code:
for(int i=0;
i<=5;
i++) {
System.out.println(i);
}
System.out.println(i);

Q18 Find the error in this code:
int num = 1;
do{
System.out.println(num);
num++;
}
while(num <= 3);
System.out.println(num);

Q19 In Java, what is the default value of an array of integers?

Q20 Which of these is not a valid way to instantiate an array in Java?

Q21 What will the following code output:
int[] arr = {1, 2, 3};
for(int num : arr) {
System.out.println(num);
}

Q22 What will be the result of executing this code snippet?
String[] names = {"Java", "Python", "C++"};
System.out.println(names[1].length());

Q23 What will this pseudocode output?
SET arr = [1, 2, 3] FOR EACH num IN arr PRINT num

Q24 What will be the result of this pseudocode?

SET matrix = [[1, 2], [3, 4]]
PRINT matrix[0][1]

Q25 Identify the issue in this code snippet:
int[] numbers = new int[5];
for(int i = 0;
i <= numbers.length;
i++) {
System.out.println(numbers[i]);
}

Q26 Find the error in this Java code:
int[][] matrix = new int[2][2];
matrix[0][0] = 1;
matrix[0][1] = 2;
matrix[1][0] = 3;
System.out.println(matrix[1][1]);

Q27 Identify the flaw in this Java code:
char[] chars = new char[-1];

Q28 Which of these is not a principle of Object-Oriented Programming?

Q29 What is an instance variable in Java?

Q30 What is the purpose of a constructor in Java?