Is singleton class thread safe?
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What is the GregorianCalendar class?
What is java algorithm?
What are the ways to instantiate the class class?
Q) I have a ArrayList object, in that object i have added 5 integer values, 5 float values, 5 string values. Now question is how can delete particular type of data ( i.e all int values or all float values or string values) in that list object at a time?
Can we catch more than one exception in a single catch block?
Why do we use string?
What is the code inside the public void actionPerformed(ActionEvent ae) override method in Applet [ Condition:- you have one TextField and One Button , you have to enter any color name inside the TextField, when you click on Button Your background will change according to your input color name]
What is java and why do we need it? Explain
Is a class an object?
Can static methods be overridden?
What is a byte string?
What is re-factoring in software?