Q1 How do you remove the Control-M characters from a file? A1 Using the sed command that replaces Control-M with nothing
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1 |
sed 's/^M//g' ReadWriteFile.sh > ReadWriteFileNew.sh |
Note: The ^M is typed on the command…
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Home › Java & Big Data Interview Q&As › ➡ Java interview › 16+ Java Key Areas Q&As › Archive for Key Area – Productivity Tools
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Chrome Postman to test and debug RESTful Web Services
Step 1 You need to get the Postman extension for the Google chrome browser.
Step 2 Search and add POSTMAN.
Step 3 Once installed, open it from the Apps link.
Step 4 Set the TEST URL, HTTP headers (especially the content type application/json, etc), and HTTP method (GET, POST, PUT, etc) and then click on send.…
Debugging JAR hell issues in Java
The following 3 questions are frequently asked by Java developers as an industrial strength Java project will have 100+ jar files. How often have you come across a Java application that requires different versions of the same library? How often do you see exceptions like NoSuchMethodError or IllegalArgumentException. Here are some tips to solve the JAR hell problem.…
Debugging like a pro with eclipse IDE tutorial for Java developers
Often you get to work on a fully functional Java application that is already in production to fix production issues or to enhance its existing functionality. As a new Java developer in the team, it is not easy to get started and contributing. The approach would be slightly different from working on a brand new project.…
Debugging SSL issues in Java & tools to debug
Q1. What are some of the issues you encounter with SSL handshake? A1. Some of the issues you try to debug are Presence of a valid certificate in trust store…
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Handy DOS commands for Java developers
Q. How will you copy files more robustly in DOS? A. Using the Robocopy (stands for Robust File Copy) or Xcopy command line utilities. Check for its options with “robocopy…
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How to perform impact analysis across Java based applications?
Performing impact analysis is a crucial software development task. It is all about calculating the impact of software change.
Q1. What is an impact analysis? Is it a trivial task?
A1. An impact analysis is about being able to tell which pieces of code, packages, modules, and projects get impacted by a change.…
JMeter beginner tutorial
This tutorial performance test the RESTFul web service we created ealier as part of the “RESTful Web Service Tutorial with Apache CXF, Maven, and Eclipse” with JMeter. JMeter is an opensource performance testing tool.
Step 1: Download latest release version of Apache JMeter from “http://jmeter.apache.org/download_jmeter.cgi“, and unzip it into c:\tools folder or folder of your choice.…
Notepad++ beginner tutorial
You can download Notepad++ from http://notepad-plus-plus.org/download. It is a very handy productivity boosting tools. Q. Why is Notepad++ is a very handy tool? A. Notepad++ is a very handy developer…
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Notepad++ productivity tips with SQL trigger code example
One of the traits of good developers is that being lazy and this laziness leads to finding productive ways to perform a task. Recently, I had to create a number…
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Hope this detailed Q&As approach will help you open more doors without feeling stagnated, earn more, attend more interviews & choose from 2-6 job offers. Even you can go contracting or freelancing or change jobs every 2-3 years to expand your horizons. Nobody knows everything, but quality of answers to some of the key & frequently asked Java & Big Data interview questions will go a long way in getting multiple job offers. I often chose from 4-6 offers. It pays to prepare.
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