Change line 5 to:

Question

Options

• AChange line 5 to: price = 4f;
• BChange line 5 to: price price = 4;
• CChange line 5 to: price = (float) 4;
• DChange line 5 to: price = (Simple) 4;
• EThe code compiles and runs properly; no changes are necessary.

• A
  3% (1)
• B
  94% (29)
• C
  3% (1)

Explanation

Option B is correct because it follows proper Java variable declaration syntax: type variableName = value;. The original line 5 is missing the type declaration before the variable name, meaning the variable price was never formally declared with its data type - without a type, the compiler cannot allocate the correct memory or perform type checking.

Why the distractors are wrong:

• A (price = 4f;) uses the float literal suffix f, but this only works if price was already declared with a type on a previous line; it doesn't fix a missing declaration.
• C (price = (float) 4;) explicitly casts the integer 4 to a float, but again assumes price is already declared - it does not introduce the required type declaration.
• D (price = (Simple) 4;) attempts to cast an integer primitive to a reference type (Simple), which is illegal in Java and would itself cause a compile error.
• E is wrong because missing a type in a variable declaration is a compile-time error in Java; the code would not run as-is.

Memory tip: Think of Java variable declarations as needing three parts - Type Name Value (e.g., int count = 0;). If any of those three parts is missing from the declaration line, the code won't compile. When you see assignment-only lines like price = 4;, ask yourself: "Was the type declared somewhere above?"

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