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 differences between constructor and method of a class in Java?

1 904

How do you use final keywords and final variables in Java?

2 686

In Java, what types of classes perform inheritance?

2 701

What types of inheritance does Java support?

2 704

What is Java exception handling?

1 642

What are the differences between unchecked exception, checked exception, and errors?

2 879

What are the types of loops in Java, and how are they used?

2 649

How do you declare an infinite loop?

2 753

What is the difference between the continue and break statement?

2 715

What is the entry point in Java, and how is it written?

2 729

In Java, what are public static void main string args?

2 713

In Java, what’s the purpose of static methods and static variables?

2 736

How do you use, call, and access a static method in Java?

2 774

How do you use, call, and access a non-static method in Java?

2 707

In Java, what are this() and super(), and where are you required to use them?

2 684

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Un-Answered Questions { Core Java }

What is the maximum size of a string in java?

1012

Explain the access modifiers for a class, method and variables?

1099

Differentiate between class and structure.

1068

How hashmap increases its size in java?

937

What does it mean to be immutable?

928

What is singleton pattern?

1049

What is final variable?

893

What is bool mean?

1019

What access modifiers can be used for class ?

979

Can you have two constructors in java?

908

What is arrays sort in java?

916

What is the difference between variable & constant?

972

What is the default value of local and global variables?

1047

Differences between C and Java?

1128

What is method and methodology?

1058

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