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Question 1: Basic Java Program Structure and Variables

Objective

Complete the fill-in-the-blanks exercise in q1.java to demonstrate understanding of:

  • Basic Java program structure
  • Variable declarations and initialization
  • Data types (int, double, char, boolean, String)
  • Basic output using System.out.println()

Instructions

  1. Open q1.java and look for comments starting with // FILL HERE:
  2. Replace each // FILL HERE: comment with the appropriate Java code
  3. The program should compile and run without errors
  4. Your output should match the expected output shown below

What to Fill

You need to complete the following parts:

  1. Import statement: Add the import for Scanner (even though not used in this question, it's good practice)
  2. Class declaration: Create a proper class with the name q1
  3. Main method: Write the correct main method signature
  4. Variable declarations: Declare and initialize 5 variables of different data types
  5. Output statements: Print the variables using System.out.println()
  6. Data type information: Print the data type names for each variable

Expected Output

When you run your completed program, it should produce exactly this output:

=== Student Information ===
Name: John Doe
Age: 25
Height: 5.8 feet
Grade: A
Is Student: true

=== Data Type Information ===
age is of type: int
height is of type: double
grade is of type: char
isStudent is of type: boolean
name is of type: String

Hints

  • Java class names should start with a capital letter, but for this exercise, use q1 as specified
  • The main method signature is: public static void main(String[] args)
  • Use proper initialization syntax for each data type:
    • int variable = value;
    • double variable = value;
    • char variable = 'value'; (single quotes)
    • boolean variable = true/false;
    • String variable = "value"; (double quotes)
  • For the data type information section, format your output as: variableName is of type: dataType

Compilation and Execution

# Compile
javac q1.java

# Run
java q1

Assessment Criteria

  • Program compiles without errors
  • All variables are properly declared and initialized
  • Output matches the expected format exactly
  • Proper use of Java naming conventions
  • All "FILL HERE" comments are replaced with appropriate code