Java Developer Team Lead Interview Questions and Answers

Designing for input and output files involves considering file formats, data validation, error handling, and security measures.

• Understand the requirements for input and output files, including file formats and data structures.

• Implement data validation to ensure that input files meet the required format and content.

• Include error handling mechanisms to address issues such as missing files or incorrect data.

• Consider security measures such as encryption and access control to prot...read more

To make a class mutable, provide public setter methods to modify its internal state.

• Add public setter methods to modify class fields

• Avoid using final keyword for class fields

• Implement proper validation logic in setter methods

• Consider thread safety when allowing mutability

Find the smallest product of elements in an array of strings.

• Convert each string element to integer and calculate the product of all elements.

• Keep track of the smallest product found so far.

• Return the smallest product at the end.