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

Core Java Interview Questions

Questions Answers Views Company eMail

How do you achieve singleton?

1028

Can we use static class instead of singleton?

1100

What is a singleton in genetics?

1128

Can we extend singleton class in java?

1014

What does singleton mean in java?

1057

How many ways can you break a singleton class in java?

1026

Can I extend singleton class in java?

1152

What is a singleton factory?

1027

Can we clone singleton object?

1125

What is a pattern what is an anti pattern?

1033

Why is singleton not thread safe?

1103

What does this () mean in constructor chaining concept?

1202

What are thread safe functions?

990

What is not thread safe?

1039

What are the pillars of java?

968

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Un-Answered Questions { Core Java }

Can java inner class be static?

1071

What will happen if a thrown exception is not handled?

1089

Can we have two methods in a class with the same name?

1108

Can we initialize the final blank variable?

1129

What is matcher in java?

1043

How do you compare values in java?

1094

What is %02d?

1142

What is files manifesting?

2255

How many bits is a 64 bit byte?

1138

What is a condition in programming?

1053

What is the maximum size of arraylist in java?

1062

How many ways can you break a singleton class in java?

1026

What is instance means in java?

1096

What is append function?

1056

What are different types of classloaders?

1073

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