You're given a Boolean 2D matrix, can you find the number of islands?
Explain when we should make an instance variable private.
What is the purpose of void?
What is the use of ?this??
What is the relationship difference the canvas class and the graphics class?
Is void a data type?
What are the types of java languages?
What is this keyword used for?
What is the use of static methods?
different types of threads?
What is the difference between @before and @beforeclass annotation?
How do you remove duplicates in java?
Which sort is best in java?