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 use of marker interface? give me good example?

2 6306

what is use of threads how many ways to create thread

iTrust, Verizon,

3 10872

Program to print 1 1 2 1 2 3 1 2 3 4 like that

Huawei,

8 13764

program to find 25 square = 625 here the 625 of last two digits is equal to 25, i don't know excatly what this type of number is called

Huawei,

1 4382

i need to know the website that i can compile and run a java code in online.(while system doesn't contain any jdk and jre)

2125

What is JAVA? Why it is platform independent?

NIIT,

10 14816

i need to know the site which compiles and run the java program completely in online... thank you for your reply in advance

2 4167

what questions are been asked ??? for interview in apti

2213

Features of JAVA ? In which version of java synchronizedXXX() methods are included in Collections class.

NIIT,

1 6997

all are saying java doesn't support multiple inheritance but by default Object class is super class for all the user defined classes and we can extend atmost one class so each class can extend more than one class so java supports multiple inheritance?i am confused with this,pls any one explain me.

4 7763

CFG,

8 9610

what is class.forname() and how it will be useful ?

3 6026

how and when compiler knows that the Java code throws the checked Exception.

HSBC,

2 12853

diff. b/w JAVA and javascript...

NIIT,

3 6823

what is the difference between String s="hello"; and String s=new String("hello");?

3 13881

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Un-Answered Questions { Core Java }

What is a java lambda expression?

1103

What is locale in java?

1063

Is java 11 paid version?

1050

How do you declare a variable?

1143

What are the restrictions imposed by a Security Manager on Applets?.

2652

How do you compare objects in java?

1016

Write a program to find maximum and minimum number in array?

1051

What is flag in java?

1049

What is passing value java?

1112

Can an interface be final?

1084

How many types of variables are there?

1177

When should I use stringbuffer?

1056

What is mnemonic code?

1081

Why strings in java are called as immutable?

1045

Difference between association, composition and aggregation?

1043

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