HCLTech fresher Interview Questions and Answers

Jagged arrays are arrays of arrays where each element can be of different sizes.

• Jagged arrays are useful when you need to store arrays of different lengths.

• Each sub-array within a jagged array can have a different number of elements.

• Example: string[][] jaggedArray = new string[3][]; jaggedArray[0] = new string[2]; jaggedArray[1] = new string[3]; jaggedArray[2] = new string[4];

if else is used for conditional statements with multiple conditions, while switch is used for selecting one of many options based on a single expression.

• if else allows for multiple conditions to be checked, while switch is used for selecting one option from many

• if else is more flexible as it can handle complex conditions, while switch is more concise for simple comparisons

• switch is often preferred when there are multip...read more

String pool is a cache of unique string literals in Java. Strings are immutable to ensure security, synchronization, and performance.

• String pool is a special memory area in Java heap where unique string literals are stored.

• Strings are immutable in Java to ensure security - once created, their values cannot be changed.

• Immutability also helps in synchronization and performance optimization.

• Example: String str1 = "hello";...read more

I am a recent graduate with a degree in Computer Science and a passion for coding and problem-solving.

• Graduated with a degree in Computer Science

• Skilled in coding and problem-solving

• Passionate about technology and innovation

My college/school percentage is 85%.

• I graduated with a percentage of 85% from XYZ College.

• I scored 85% in my final exams at ABC School.

• My overall percentage throughout college was 85%.