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 5994

what is mean by method signature?

Satyam,

8 13084

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

Satyam, STI,

3 8856

whats the life cycle of jsp

Satyam,

15 23623

wht is customised exception?

Logica CMG, Novell, Prudential,

1 6745

what is diff bet iterator and enumeration?

4 9591

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

DNS,

2 5683

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 13787

what is overloading in java?

Ascent, DNS, Infosys, SDA, VelTech,

13 34601

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 13799

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 6460

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

Wipro,

4 9493

how you will prevent method overriding?

HCL,

6 14740

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

NIIT, Wipro,

7 24048

whats is inheritance?

CTS, HCL,

15 19711

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Un-Answered Questions { Core Java }

What is an infinite loop?

1255

What does the “static” keyword mean?

1104

What are the important methods of java exception class?

1134

What is arrays sort in java?

966

What happens when a thrown exception is not handled?

1115

What is consumer in java?

977

What are use cases?

980

How to sort array in descending order in java?

923

What is array sorting in java?

1060

What are desktop procedures?

1045

What is java util list?

960

What is java and its types?

1094

What is final class?

1024

What is methodological framework?

1045

How do you define a singleton class?

1080

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