Program Coding — Important Questions

It converts the source code line-by-line and stops at each error.

Step 1: An Interpreter is a type of language translator. Step 2: It reads and converts code ONE LINE AT A TIME. Step 3: If an error is found, it STOPS at that line until the error is corrected. Step 4: This makes debugging easier but execution slower — the opposite of a compiler. Step 5: The compiler is faster because it processes all at once; the interpreter is slower but easier to debug.

2

Step 1: The % operator is the Modulus operator — it gives the REMAINDER of division. Step 2: Divide 22 by 5: 22 ÷ 5 = 4 with a remainder. Step 3: 5 × 4 = 20. Step 4: Remainder = 22 - 20 = 2. Step 5: So 22 % 5 = 2. The '/' operator would give the quotient (4), not the remainder.

class

Step 1: In Java, every program is written inside a class. Step 2: The keyword 'class' is used to declare and name the program file. Step 3: For example: 'public class Sum' declares a class named Sum. Step 4: 'void' is used for methods that return no value; 'static' is a modifier; 'import' is used to include packages. Step 5: None of these define the class itself — only 'class' does.

Logical Error

Step 1: There are three types of errors in Java programs. Step 2: Syntax Error — occurs when grammar/rules of Java are broken; caught by the compiler. Step 3: Run time Error — occurs during execution (e.g., dividing by zero); not caught by compiler. Step 4: Logical Error — the program compiles and runs successfully, but gives WRONG OUTPUT because the logic is incorrect (e.g., writing a*b instead of a+b). Step 5: Compilation Error is another name for Syntax Error. Logical Error is the answer here.