Java Datatypes & Operators Quiz

What are the primitive data types in Java?

• true, false, null, undefined, NaN

• int, long, float, double, boolean, char, byte

• string, array, object, null, undefined

• int, long, float, double, boolean, char, short

Explain the difference between int and double data types in Java.

• int and double are interchangeable and can be used for any type of number.

• int stores whole numbers, while double stores decimal numbers.

• int stores decimal numbers, while double stores whole numbers.

• int is used for text data, while double is used for numerical data.

What are the arithmetic operators in Java?

• +, -, *, /, %, ^

• +, -, *, /, //

• +, -, *, /, **

• +, -, *, /, %

Write a Java code to perform addition using the arithmetic operator.

• int sum = num1 * num2;

• int sum = num1 / num2;

• int sum = num1 + num2;

• int sum = num1 - num2;

What are the relational operators in Java?

• ==, !=, >, <, >=, <=

• ++, --, %

• &&, ||, !

• +, -, *, /

Explain the usage of the '==' operator in Java.

• It checks if the values are equal and returns a boolean value.

• It multiplies the values

• It subtracts the values

• It adds the values together

What are the logical operators in Java?

• !=

• ++

• &&, ||, !

• ==

Write a Java code to demonstrate the usage of the '&&' operator.

• boolean result = (5 < 3) && (10 < 20); // This will return false

• boolean result = (5 < 3) && (10 > 20); // This will return false

• The usage of the '&&' operator in Java can be demonstrated as: boolean result = (5 > 3) && (10 < 20); // This will return true

• boolean result = (5 > 3) && (10 > 20); // This will return false

What are the bitwise operators in Java?

• & (AND), | (OR), ^ (XOR), ~ (NOT), << (left shift), >> (right shift), >>> (zero fill left shift)

• & (AND), | (OR), ^ (XOR), ~ (NOT), << (left shift), >> (right shift), and >>> (zero fill right shift)

• & (AND), | (OR), ^ (XOR), ! (NOT), << (left shift), >> (right shift), >>> (zero fill right shift)

• & (AND), | (OR), ^ (XOR), ~ (NOT), << (left shift), >> (right shift), >> (zero fill right shift)

Explain the purpose of the '<<' operator in Java.

• It is used to perform bitwise left shift operation.

• It is used to concatenate two strings

• It is used to perform addition of two numbers

• It is used to compare two values