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 are the two types of streams offered by java 8?

985

What is a java predicate?

1016

What is a consumer in java?

1071

What is foreach loop in java?

1068

What is functional interface in javatpoint?

1133

What is join () in java?

1012

What is the advantage of functional interface in java 8?

1046

What is the use of predicate in java 8?

1014

What is yield () in java?

929

Why lambda expression is used in java?

1117

What are the properties of thread?

969

What do you mean by thread safe?

1027

What is the purpose of the return statement?

1123

What is difference between null and void?

1016

What happens when heap memory is full?

1034

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Un-Answered Questions { Core Java }

Write a program to show whether a graph is a tree or not using adjacency matrix.

1146

What are the uses of synchronized keyword?

1051

What is difference between float and double?

1011

What are identifiers in java?

1193

What is keyword auto for?

1253

What is this () in java?

1082

Is double bigger than float?

1039

What are the practical benefits, if any, of importing a specific class rather than an entire package (e.g. Import java.net.* Versus import java.net.socket)?

1168

What is the implementation of destroy method in java. Is it native or java code?

1019

What are the three best choices for a development environment?

1155

What is string :: npos?

1176

What are heterogeneous objects?

1085

What are the difference between string, string builder, and string buffer in java?

1168

Difference between this() and super() in java ?

1137

Explain the selection sort algorithm and state its time complexity?

1070

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