Operators and Expressions

Which of the following are arithmetic operators in Java?

Which of the following are examples of relational operators in Java?

Which of the following are examples of logical operators in Java?

Which of the following operators can be used with strings in Java?

• *

What is the value stored in x, y and z, after the following set of statements are executed:

y = 10;

z = 15;

x = ++y + z-- + y-- + z++;

• x = 51, y = 10, z = 15

• x = 50, y = 9, z = 15
• x = 50, y = 10, z = 15
• x = 49, y = 9, z = 16

In Java, consider the following code snippet:

int a = 10;

int b = 10;

int c = 5;

boolean x = (a < b) && (a >= c);

boolean y = (a != b) || (a > c);

Now, what are the values of x and y?

• x : true, y : true

• x : true, y : false

• x : false, y : false

• x : false, y : true

The ternary operator in Java is a type of

• Logical operator

• Arithmetic operator
• Relational operator

• Conditional operator

• sqrt(a * a + b * b + c/d)

• Math.sqrt(Math.pow(a + b, 2) + c / d)

• Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2) + (c / d))

• Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2)) + (c / d)

int x = 5;

double y = 3.5;

int z = x * y;

The code above, gives an error. What are the ways to fix the error?

• z should be declared as a double

• y should be declared as ant

• x should be declared as double

• The result of x * y should be explicitly casted to an int

What is the result of the following expression in Java?

int result = 5 * 3 + 10 / 2 - 1 % 3 * 2 + 4;

• 18
• 25
• 14

• 22