[Solved] Find the error in this code snippet:interface I { default void foo() { bar(); } void bar(); } class C implements I { public void bar() { System.out.println("bar"); } } | Java

Java - Interfaces

Find the error in this code snippet:

interface I {
    default void foo() {
        bar();
    }
    void bar();
}
class C implements I {
    public void bar() {
        System.out.println("bar");
    }
}

AInterface default method cannot call abstract methods.

BClass C must implement foo() method.

CInterface methods cannot be default and abstract together.

DNo error; code compiles and runs fine.

Step-by-Step Solution

Solution:

Step 1: Analyze default method calling abstract method
Default method foo() calls abstract method bar(), which is allowed.
Step 2: Check class implementation
Class C implements bar(), so no error occurs.
Final Answer:
No error; code compiles and runs fine. -> Option D
Quick Check:
Default method can call abstract method if implemented later [OK]

Quick Trick: Default methods can call abstract interface methods [OK]

Common Mistakes:

Assuming default methods cannot call abstract methods
Expecting class to implement default methods

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Find the error in this code snippet:

Step 1: Analyze default method calling abstract method

Step 2: Check class implementation

Final Answer:

Quick Check:

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