[Solved] Identify the error in the following Java code:class Sample { int number = 5; static void printNumber() { System.out.println(number); } public static void main(String[] args) { printNumber(); } } | Java

Java - Static Keyword

Identify the error in the following Java code:

class Sample {
    int number = 5;

    static void printNumber() {
        System.out.println(number);
    }

    public static void main(String[] args) {
        printNumber();
    }
}

AStatic method cannot access non-static variable 'number' directly

BMissing return type for method printNumber

CVariable 'number' should be declared static

DNo error, code runs fine

Step-by-Step Solution

Solution:

Step 1: Check method and variable types
printNumber() is static, number is non-static.
Step 2: Understand access rules
Static methods cannot directly access instance variables because they belong to the class, not an object.
Step 3: Identify the error
Trying to print number inside a static method causes a compile-time error.
Final Answer:
Static method cannot access non-static variable 'number' directly -> Option A
Quick Check:
Static methods lack instance context [OK]

Quick Trick: Static methods can't use instance variables without object [OK]

Common Mistakes:

Assuming static methods can access instance variables
Thinking variable must be static to fix error
Ignoring that static context lacks 'this'

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More Java Quizzes

Identify the error in the following Java code:

Step 1: Check method and variable types

Step 2: Understand access rules

Step 3: Identify the error

Final Answer:

Quick Check:

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