How to convert string to char and vice versa?
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How can we achieve thread safety in java?
Explain the private protected method modifier?
What does singleton mean in java?
When we will use an Interface and Abstract class?
Why is string builder not thread safe?
What are non-access modifiers?
What is equlas() and hashcode() contract in java? Where does it used?
What is immutability in java?
What is the difference between JDBC 1.0 and JDBC 2.0?
Difference between method overloading and overriding.
What are the actions that can occur when a thread enters blocked state?
what is difference between business delegate and data access object(dao)? in java?