Look at this code:

Is there anything wrong with the above code?

Question

Look at this code:

Is there anything wrong with the above code?

BlackTom AI · Accepted Answer

Carefully examining the code snippet, we need to check both method signatures and their bodies for correctness.
Option 1: "This code has no problems." This is unlikely to be true because one of the methods declares a return type of int but does not return a value in all code paths, which typically leads to a compilation error.
Option 2: "printMessage has incorrect overloading" The printMessage overloads are defined as printMessage(String) and printMessage(int). Overloading is allowed when the parameter lists differ, and here they do. Therefore, there is no issue with overloading printMessage based on the information shown; the problem, if any, would be elsewhere.
Option 3: "printError has incorrect overloading" The printError method is declared as public int printError(String errorMessage). Inside its body, it prints a string but does not return an int. Since the return type is int, the method must return an int value on all code paths. The absence of a return statement here makes this method invalid, which is a concrete error related to its signature vs. return requirements. This is not strictly an overloading issue by itself; it is a mismatch between the declared return type and the method body.
Option 4: "Both printMessage and printError have incorrect overloading" Given that printMessage appears to be correctly overloaded by differing parameter types and its bodies return appropriate types, there is no evidence shown that printMessage overloading is incorrect. Therefore, this combined critique is not accurate based on the provided code.
In summary, the most precise problem evidenced by the code is that printError declares a return type of int but does not return a value, which constitutes a return-type/statement mismatch rather than a pure overloading error. The printMessage overloads themselves are syntactically valid since overloading relies on parameter lists, which differ here. The remaining options either mischaracterize the overloading or rely on the incorrect assumption that printMessage has a problem when it does not, given the visible code.

Look at this code: Is there anything wrong with the above code?单项选择题

类似问题

Select the correct method that can overload the following method. public int addKey(String s, int i);

Method overloading occurs when:

Which of the following statements about method overloading in Java is true?

Question at position 30 What is an example of compile-time polymorphism in Java?Method overridingMethod overloadingInheritanceObject creationClear my selection

Question at position 13 What type of polymorphism is achieved through method overloading in Java? (Note: it's overloading NOT overriding)Adaptive polymorphismCompile time polymorphismDynamic polymorphismFixed point polymorphismClear my selection

How does the concept of "overloading" apply to methods within a Java class?

The following is false about method overloading, EXCEPT _______________.

The following is false about method overloading, EXCEPT _______________.

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单