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

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Core Java Interview Questions

Questions Answers Views Company eMail

Discuss about garbage collector in Java.

Agilent, Integreon, ZS Associates,

1130

Does java support Operator Overloading?

1088

How can I debug the Java security exceptions and AccessControlExceptions?

1202

How many types of memory areas are allocated by JVM in java?

UGC Corporation,

1117

What are the methods to rectify ambiguities in the interfaces in JAVA?

1153

What do you understand by garbage collection in Java? Can it be forced to run?

1035

What environment variables are required to be set on a machine in order to run Java programs?

1277

What if I write static public void instead of public static void in java?

Winsol Solutions,

1141

What is an exception? difference between Checked and Unchecked exception in Java

SkillGun Technologies,

1061

What is object cloning in Java?

SwanSoft Technologies,

1151

What is the difference between ArrayList and Vector? which one is better in Java

SkillGun Technologies,

1193

What is the difference between C++ and Java and your preferences?

1171

What is the difference between Java Program Constructor and Java Program Method, What is the purpose of Java Program constructor Please Explain it Breafily?

1097

What is the difference between static method and instance method in Java?

SwanSoft Technologies,

1289

What is the need of transient variables in Java ?

1116

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Un-Answered Questions { Core Java }

What is a flag variable?

1028

What do you understand by the term wrapper classes?

1053

What is the buffer limit?

1082

What are advantages and disadvantages of OOPs?

1195

What is the collections api?

1119

How garbage collection is done in java?

1105

What is casting in java programming?

1088

What methods are used in Servlet?Applet communication?

2309

Explain the importance of join() method in thread class?

1138

Can we override final method?

1068

What are the differences between heap and stack memory in java?

1107

Is the milky way in a void?

1008

What is substring 1 in java?

1235

What is meant by string is immutable?

1159

What is set in java?

1107

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