Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

What is instanceof keyword?

1272

What does super keyword do?

1153

What is the difference between JDK and JVM?

1353

How to sort a collection of custom Objects in Java?

1113

What are the important features of Java 8 release?

1147

What is finally and finalize in java?

1160

Why Java doesn’t support multiple inheritance?

1091

Why Java is not pure Object Oriented language?

1169

What is static import?

1240

What is Java Reflection API? Why it’s so important to have?

1249

What is Java Package and which package is imported by default?

1158

What is break and continue statement?

1175

What are the important features of Java 11 release?

1172

Which class is the superclass of all classes?

1158

Java Compiler is stored in JDK, JRE or JVM?

1572

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Un-Answered Questions { Core Java }

What is meant by data hiding/encapsulation?

1166

What is the difference between an argument and a parameter?

1047

What is anti pattern in programming?

1017

when you will synchronize a piece of your code? : Java thread

1074

What is java argument list?

991

Discuss about garbage collector in Java.

1135

What is overloading and overriding in java?

1303

How java uses the string and stringbuffer classes?

1145

I want to print “hello” even before main is executed. How will you acheive that?

1156

What is printwriter in java?

1009

What does t in java mean?

1061

When is finally block not called?

1158

Which is bigger float or double java?

1032

What is == and === in javascript?

1114

What is a vararg?

1127

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