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

Java J2EE (14736)
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Java Related Interview Questions

Questions Answers Views Company eMail

Can we access instance variables within static methods ?

1 1167

What is the use of optional ?

1 1102

Difference between doublesummarystatistics, intsummarystatistics and longsummarystatistics ?

1 1049

Difference between final and effectively final ? Why is effectively final even required ?

1 1060

Similarity and difference between static block and static method ?

1 993

Difference between class#getinstance() and new operator ?

1 1296

What is a lambda expression ? What's its use ?

1 1170

Describe what happens when an object is created in java ?

1 1084

Difference between == and .equals() ?

1 1049

What are default methods ?

1 1118

Does constructor creates the object ?

1 1094

What are the difference between composition and inheritance in java?

1 1105

How is abstraction implemented in java ?

1 1108

How can we disable a constraint ?

1 1091

Does sql allow null values ? Can we use it within where clause ?

1 1048

Un-Answered Questions { Java Related }

What is an object in java and how is it created?

1110

How does java handle integer overflows and underflows?

1098

Write a program to print count of empty strings in java 8?

1071

Hi frnds how to lock an user when he enter wrong credentials more than 3 time using java or j2ee tech take username and password in a bean no need to connect DB and validate give me some sample application code or links its urgent for me thanks in advance

2409

what is reflection api? How are they implemented?

1086

What do you know about validation plugin ?

1009

What is the difference between break and continue statements?

1107

Realized?

2239

Write a java program to find the route that connects between Red and Green Cells. General Rules for traversal 1. You can traverse from one cell to another vertically, horizontally or diagonally. 2. You cannot traverse through Black cells. 3. There should be only one Red and Green cell and at least one of each should be present. Otherwise the array is invalid. 4. You cannot revisit a cell that you have already traversed. 5. The maze need not be in the same as given in the above example

2649

What is difference between @controller and @restcontroller in spring?

520

Can we extract main method from another class?

1017

What is java string pool?

1068

Write a program to find the whether a number is an Armstrong number or not?

1085

Hi frnd can i any one kindly can post for me portlet,hibernate and spring example application and with flow explantion configuration using Jdeveloper.and related links ar tutorials kindly please send me .its urgent for me .thanks in advance...........else can any one send to kondaiah.goddeti@gmail.com

2244

What is parsing in java?

1022

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