Unix Questions

How to find and delete files older than a year in Unix?

Write the awk command print the 5th column of 'ls -l'?

What will be the default permissions of a file created in Unix?

How would you execute a script file and how to execute the script file from a different directoy?

Write the grep command to find pattern "Vinod" and "Vinney" from a file.

what is SED and AWK?

Adding Questions

What are the conditions underwhich finally() wont be called?

Differences between wait() and sleep()?

What is static/early binding and dynamic/late binding?

How to create user defined exceptions? How to use throw and throws?

What is synchrnization? What are threads and why do we need them?

Static block

Updated on 8th May 2010

I have a design, which gets changed often. In this case, which is to be used either abstract class or interface?

Difference b/w wait() and sleep()?

Difference b/w Hashmap and Hashtable? How to synchronize my HashMap()?

Features in Java1.5

Difference b/w stringBuffer and stringBuilder?

Reflection