Should database connections be singleton?
What is application system?
What is the difference between jsp and servlet?
what are the jsp tags with example?
Difference between Primary key and unique key?
What is variable and constant explain with example?
java program with complete 4 oops concepts implemented example
What are the types of strings?
Do extraneous variables affect validity?
Explain tree set and its features?
What is downcasting?
Can abstract class have private constructor?
What is this keyword in java?