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

Core Java Interview Questions

Questions Answers Views Company eMail

whats the life cycle of jsp

Satyam,

2 6093

what is mean by method signature?

Satyam,

8 13347

what is mean by String and StringBuffer? What is mean by Methooverriding and Overloading?

Satyam, STI,

3 9024

whats the life cycle of jsp

Satyam,

15 24041

wht is customised exception?

Logica CMG, Novell, Prudential,

1 6828

what is diff bet iterator and enumeration?

4 9734

whats is the use of final,in which situation final can be used in the application?

DNS,

2 5798

Explain class A{} class B{} class C{} all the three classes are saved in a single file name, what the name should i provide to the file ,in what file name should i run the program? Ple Explain

DNS, Infosys, TCS,

9 14101

what is overloading in java?

Ascent, DNS, Infosys, SDA, VelTech,

13 35029

They had given one progam final HashMap hm=new HashMap(); public void show() { hm.put("name",value); } in this prg here the final hashtable value can be changed in put method,its the prg run?

DNS, Wipro,

3 13967

they asked class A{} class B{} class c{} all the three class saved as a single file,there is no main method in the file and anothe class M.java class m { psvm(String args[]) { // here the parent class can access } }

DNS, IPSR Solutions,

2 6548

how you will prevent inheritance is there any other way other than inheritance?

Wipro,

4 9647

how you will prevent method overriding?

HCL,

6 14953

byte a=5; byte b=5; byte c=a+b; System.out.println(c); whats the o/p?

NIIT, Wipro,

7 24363

whats is inheritance?

CTS, HCL,

15 20221

Post New Core Java Questions

Un-Answered Questions { Core Java }

What is difference between java and java ee?

1080

What is the hashcode () and equals () used for?

1130

Explain about features of local inner class?

1192

What are the methods of object class ?

1109

What are the 4 types of characters?

1066

What is difference between static class and singleton pattern?

1093

Where local and global variables are stored?

1132

What about interthread communication and how it takes place in java?

1124

Does string is thread-safe in java?

1148

Explain features of interfaces in java?

1061

What is difference between wait and notify in java?

1207

What is stored procedure. How do you create stored procedure ?

1990

What is the difference between state-based unit testing and interaction-based unit testing?

995

What is formatted output in java?

1032

Difference between stack and queue?

1144

For More Un-Answered { Core Java } Questions Click Here