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

Java J2EE (14736)
J2ME (151)
Java Related AllOther (507)

Java Related Interview Questions

Questions Answers Views Company eMail

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 7857

CFG,

8 9727

what diff bw constructor method & method

CTS,

4 6676

what are the gbx,gdb and other tools in linux for core dump,and how to configure stdout,stderr..what is the difference between stdout ,stderr and coredump. how to create core dump and view that one? please can anybody explain me?

1 4832

how to know which version of java is running on ur computer using command prompt?

BeBo Technologies,

2 7648

What is there in browser that it supports web based applications of java or any other PL?

2 4593

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

3 6104

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

HSBC,

2 12909

how can we connect to db without using getConnection() method

4 7895

diff. b/w JAVA and javascript...

NIIT,

3 6882

Weblogic admin don't know the admin credentials of weblogic 8.1 UI..how can he get the credentials?

IBM,

2 13686

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

3 13947

hi to all,i have a question on static block. i saved below as test.java class test extends a { static { System.out.println("test static"); } public static void main(String []dfs) { } } class a { static { System.out.println("a static"); } public static void main(String []asdf) { } } o/p as static test static but if i change base class as test class then class test { static { System.out.println("test static"); } public static void main(String []dfs) { } } class a extends test { static { System.out.println("a static"); } public static void main(String []asdf) { } } o/p test static explain me why "a static" wasn't print in second code when it is in derived class

1 3758

what are the uses of Class class and what it returns? explain it with the example code.

1 3929

class test { private static void main(String []adsf) { } } explain me that the above code is error or exception

3 5731

Un-Answered Questions { Java Related }

Are jvm’s platform independent?

975

What is the first argument of the string array in main method?

1025

What is a classloader in java?

1083

What do you understand by casting in java language? What are the types of casting?

923

explain different ways of using thread? : Java thread

1079

What is lazy class?

480

Differentiate between static and non-static methods in java.

1115

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

2415

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

536

i want test pattern of zylog company and some examples also

2855

What is a constructor overloading in java?

1121

What are the differences between heap and stack memory in java?

1126

What do you mean by an interface in java?

1095

How to create a base64 decoder in java8?

1131

Can we extract main method from another class?

1026

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