How to Avoid NullPointerException in Java Part 1

Table of Contents

• Related Posts
• Check Null
• Use null safe methods and libraries
• Return empty collection/array, instead returning null
• Throw exceptions instead return a null or an empty string
• Unboxing and NullPointerException
• NullPointerException related with Collection
  • Check whether collection is Null before loop
  • Copying between different collection may throw NullPointerException
  • Use Advanced Data Structure: Multimap, HashBasedTable
  • Avoid null key or null value in the collection
  • Rules for using primitive data types and wrapper classes
  • Use Optional Class
  • Check Null explicitly, don’t catch NullPointerException
  • Convenience methods to work with Null
  • Other NullPointerException Cases
  • Check Whether nullable
  • NullPointer Bugs
  • Resources

Best Chrome Reader Extensions to Optimize Reading Experience

Table of Contents

• Why Use Chrome Reader Extension for Reading?
  • Copy Text
• Chrome Extensions for Reading
  • Dark Reader
  • Reader View
  • Just Read
  • Clearly
  • Mercury Reader
  • Summary

Youtube Tips and Tricks

Table of Contents

• Awesome Tips Series about Google Products
• Chrome Extensions for Youtube
  • Always on top Floating Mini Player for YouTube™.
  • Embed a video or playlist
• Tips about Youtube
  • Switch account in Youtube
• Shortcuts
  • Customize Chrome Vimium
  • Skipping
  • Youtube Search Tips
• Kids
• Youtube App Settings
  • Trending
  • Frequently Accessed Urls
• How to Spend Less Time on Youtube
• Channels + Explore
• Youtube for Developers
• Different Profiles: how to separate videos work profession skills and entertainment in youtube
• Youtube Search Urls
• Support
  • Related Posts

Promote Your Content by Creating a Custom "page Not Found" in Blogger

Table of Contents

• Why Create a Custom Not Found Page?
• Why not Use Custom Redirects in Search Preferences
• How to Create a Custom “Page Not Found”? in Blogger
• Maintain Custom Redirects in Code and Git
• Redirect to Archives Page
• Search the Missing Page in Google
• Promote Posts

Awesome Tips, Tricks about Gmail

Table of Contents

• Dark Mode
• Write Email Now And Send It Later
• Create an event directly from Gmail
• Create an account or schedule an event directly from Gmail
• Snooze Emails
• Draft Emails
• Categories
• Labels
• Filters
• Delete Emails
• Print Emails
• Canned Responses
• Gmail Search Tips
• More Tips
  • Related Posts

How to Google Search Like a Pro

Table of Contents

• Awesome Tips Series about Google Products
• Search to find info first
• Google Search Tips
  • How to restrict search by a date range
  • Usage rights
• Custom Search Engines in Chrome
• Search the Chrome History
  • Use Chrome History to find/reopen recently closed pages
• Remove History to Make Search Address Bar Work Better
• Gmail Search Tips
• Youtube Search Tips
  • Youtube Search Urls
• Misc
  • Feeling lucky:
  • Related Posts

How to Keep Mac from Overheating

Table of Contents

• How to Keep Your Mac from Overheating
• Use Screen Corners to Put Display Into Sleep
• How to Reduce Chrome Memory Usage

Awesome Tips about Chrome

Table of Contents

• Chrome Shortcuts
• Must-Have Google Chrome Extensions
• How to Speed up Google Chrome
• Custom Search Engines in Chrome
• Bookmarks
• Chrome Urls
• Tips abut Chrome

Writing Blog with Markdown, Atom Editor, Pandoc and Github

Table of Contents

• Series: Awesome Tips about Markdown
• TL;DR
• Why Blogger with Markdown
• Writing in Atom with Markdown
  • Atom Packages for Writing
  • Packages for Writing - Markdown
• Call Commands Faster
• Write Faster
  • No Need to Select
  • Case Change
  • Spell Check
  • Snippets
  • 2: Use Pandoc to Generate Html and Post it into Blogger
  • Proof-read
• Why Git/Github
• Bonus
  • How to Building Presentations with Reveal.js, Markdown and Github Pages
  • Related Posts

How to Improve Problem Solving Skills - A Developer's Guide

How to Improve Problem Solving Skills

Jeffery Yuan

April 24, 2019

Table of Contents

• Why Problem-solving skills matters
  • Problem Solving and troubleshooting
  • Solve the Problem when Needed
• How to Solve a Problem
  • Understand the Problem/environment First
  • Check the Log and Error Message
  • Case Study – The Log and Error Message
    • Problem: Failed to talk Cassandra server: 10.10.10.10
  • Source code is always the ultimate truth
  • Reproduce the problem
  • Solving Problem from Different Angles
  • Find Information Effectively
  • Find Information Effectively Cont.
  • How to Troubleshoot and Debug
  • Resource About Troubleshooting
  • Urgent Issues in Production
• Ask for help
  • Before
  • Where and Who
  • How to Ask Help
  • Learn more
  • Fix same/similar/related problems in other places
• Knowledge & Tools
  • Knowledge
  • Knowledge cont.
    • Common Problems
  • Tools - Eclipse
  • Practice - Connect to the remote data in local dev
  • Tools - Decompiler
  • Tools - Java
  • Tools - Splunk
  • Tools - Misc
• Problem Solving in Practice
  • Example: Redis cache.put Hangs
  • Practice - Iterator vs Iterable
  • Practice - Iterator vs Iterable
  • Practice 2 - Spring Cacheable Not Working
• Post Mortem
  • Reflection: Lesson Learned
  • Think More
• Bonus
  • Building Troubleshooting-Friendly Application
  • How to write test efficiently
• The End
  • This presentation was built using Reveal.js, Markdown and Github Pages

Awesome Tips about Google Blogger

Table of Contents

• TL;DR
• Awesome Tips Series about Google Products
• Awesome Tips Series about Blogger
• Change Date And Time To Promote/Move Posts
  • Add a post to the past
• Manage/Use Labels Effectively
  • Blogger Feeds API
• Tips about SEO and Promote Posts
  • Create an Archive List/Page
  • Add Custom Redirects after changed the url
  • Create a Custom “Page Not Found”
  • Promote your Content by Creating and Sticking Index Page
  • How To Promote Posts Based On Labels And Recency
• Tips
  • Sitemap web pages
  • search-console
  • Can improve
  • Related Posts