Java Basics Quiz for Grade 1

What is Java?

• A type of coffee

• A type of car

• A type of fruit

• A high-level programming language

What is the output of 2 + 3 in Java?

• 6

• 4

• 5

• 7

How do you declare a variable in Java?

• data_type variable_name;

• int variable_name;

• variable_name = new data_type();

• variable_name = data_type;

What is the keyword used to define a class in Java?

• class

• method

• type

• category

What is the purpose of the 'public' keyword in Java?

• To restrict access to a method, class, or field

• To make a method, class, or field accessible only within the same package

• To declare that a method, class, or field can be accessed by any other code.

• To hide a method, class, or field from other classes

What is the difference between '==' and 'equals()' in Java?

• The '==' operator is used to compare the contents of two objects, while the 'equals()' method is used to compare the values of two objects.

• The '==' operator is used to assign values to objects, while the 'equals()' method is used to check for null values in objects.

• The '==' operator is used to compare the values of two objects, while the 'equals()' method is used to compare the contents of two objects.

• The '==' operator is used to check for null values in objects, while the 'equals()' method is used to compare the references of two objects.

What is the use of 'System.out.println()' in Java?

• To create a new object

• To perform mathematical calculations

• To read input from the keyboard

• To print the output to the console

What is the difference between 'int' and 'String' in Java?

• int stores string values and String stores integer values

• int is used for floating point numbers and String is used for whole numbers

• int stores integer values and String stores a sequence of characters

• int is a data type and String is a method in Java

How do you create a new object in Java?

• initialize ClassName()

• make new ClassName()

• create ClassName()

• new ClassName()