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Core Java Interview Questions
Questions Answers Views Company eMail

How does JAVA ClassLoader work?

IBM,

1 2874

What is java class writing rules?

Oracle,

1 1918

What are possible key words, we can use to declare a class?

Tech Mahindra,

2 2003

How many types of modifiers are there?

Infosys,

1 1888

What are access modifiers?

Infosys,

1 1869

What are non-access modifiers?

Cognizant,

2 1864

How does access modifiers work?

Wipro,

1 1584

How does static modifier work?

Wipro,

1 1770

How does abstract modifier work?

Wipro,

1 1671

How does synchronized modifier work?

IBM,

1 1683

How does final modifier work?

Tech Mahindra,

1 1949

What are legal modifiers that we can use to declare an inner class?

Infosys,

1 1914

What is difference between “==” and equals()?

IBM,

1 1687

Why do we need to override equals() and hascode() method of object class?

Cognizant,

1 1784

How to override equals() and hashCode() method in java?

Wipro,

1 1773


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Un-Answered Questions { Core Java }

What are inner classes or non static nested classes in java?

199


Why is stringbuffer called mutable?

134


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

196


How can we create a thread in java?

163


What is %d in printf?

106






Explain access specifiers?

186


Explain the differences between static and dynamic variables?

156


Why java is object oriented?

121


When we serialize an object does the serialization mechanism saves its references too?

144


Whats the difference between notify() and notifyall()?

139


Can a variable be local and static at the same time?

144


How many bits is a word?

115


Where we write javascript code in html page?

163


What is treeset in java collection?

99


What is final int?

109