Java Fundamentals Assessment

What is the basic structure of a Java program?

• A Java program consists only of a main method without any class.

• A Java program requires multiple main methods to function properly.

• A basic structure of a Java program includes a class definition and a main method.

• A Java program is structured around functions rather than classes.

Who developed Java and in which year was it released?

• Java was developed by IBM and released in 1996.

• Java was developed by Sun Microsystems and released in 1995.

• Java was developed by Oracle and released in 1998.

• Java was developed by Microsoft and released in 2000.

What are conditional statements used for in Java?

• Conditional statements are used for defining classes in Java.

• Conditional statements are used for creating user interfaces in Java.

• Conditional statements are used for decision-making and controlling the flow of execution in Java.

• Conditional statements are used for managing memory allocation in Java.

How does an if-else statement work in Java?

• An if-else statement only runs if the condition is false.

• An if-else statement can only execute one line of code.

• An if-else statement executes code based on a boolean condition.

• An if-else statement is used to declare variables in Java.

What is the syntax for a switch statement in Java?

• switch(expression) { case value1: // code block; break; case value2: // code block; continue; }

• switch(value) { case value1: // code block; case value2: // code block; }

• switch(expression) { case value1: // code block; break; case value2: // code block; break; default: // code block; }

• switch(expression) { case value1: // code block; break; default: // code block; }

What is the purpose of the 'break' statement in a switch?

• To define a default case in the switch statement.

• To initialize variables within the switch statement.

• To prevent fall-through behavior by exiting the switch statement.

• To allow multiple cases to execute sequentially.

What are the different types of operators in Java?

• Conditional, Iterative, Exception Handling

• Data Types, Control Structures, Functions

• Input/Output, Networking, Memory Management

• Arithmetic, Relational, Logical, Bitwise, Assignment, Unary

What is the difference between arithmetic and relational operators?

• Arithmetic operators compare values; relational operators perform calculations.

• Arithmetic operators handle numerical calculations; relational operators handle comparisons.

• Arithmetic operators are only for integers; relational operators are for floating-point numbers.

• Arithmetic operators are used for string manipulation; relational operators are for math.

How do you declare a variable in Java?

• var variableName = value;

• To declare a variable in Java, use the syntax: dataType variableName; or dataType variableName = value;

• variableName dataType;

• dataType: variableName;

What is the significance of the main method in a Java program?

• The main method is responsible for garbage collection.

• The main method is where variables are declared.

• The main method is used for defining classes.

• The main method is the entry point for Java applications.