Wipro Junior Java Developer Interview Questions and Answers for Freshers

Switch case is used for multiple conditions while if else is for binary conditions. Sorting can be done using various algorithms.

• Switch case is faster than if else for multiple conditions

• If else is more readable for binary conditions

• Sorting can be done using bubble sort, insertion sort, quick sort, etc.

• Example code for bubble sort: for(i=0;iarr[j+1]){swap(&arr[j],&arr[j+1]);}}}

Difference between compiler and interpreter with a coding challenge

• Compiler translates the entire code into machine language before execution while interpreter translates line by line during execution

• Compiler generates an executable file while interpreter does not

• Compiler is faster but debugging is harder while interpreter is slower but debugging is easier

• Coding challenge: Write a program to find the sum of two numbers

SID stands for Security Identifier. It is a unique identifier assigned to a user, group, or computer account in Windows.

• SID is used to control access to resources in Windows

• It is a string of alphanumeric characters

• SID is generated by the Windows operating system during the creation of an account

• It is used to identify users, groups, and computers in a network

• Example: S-1-5-21-3623811015-3361044348-30300820-1013