What is boolean in java?
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What is bool mean?
Difference between object and reference?
What is Connection pooling? Explain Pros and Cons?
What is the use of protected in java?
If set accepts only one argument then how can it compare two objects to avoid duplicates
Explain what access modifiers can be used for variables?
How many bytes is a char in java?
What are class members by default?
Why we use protected in java?
What’s the difference between the methods sleep() and wait()?
What is the size of a string in java?
Differentiate between array list and vector in java.