When do we use synchronized blocks and advantages of using synchronized blocks?

1232

How do I remove a character from a string in java?

964

What is the purpose of default constructor?

1000

Can we have multiple classes in single file ?

1067

Does string is thread-safe in java?

1087

What is connection class in java?

960

How do you sort objects in java?

969

What are design patterns and please explain?

1090

What are the main concepts of oops in java?

1745

What do you understand by private, protected and public?

1039

what do you mean by classloader?

1090

What is ‘has a’’ relationship in java?

1221

What does a za z0 9 mean?

1105

How do you override a method?

1016

What happens when I use / and % with a negative numerator?

1043