How To Fix “unable to find valid certification path to requested target” Error

If you are here, that means probably you have encountered below error: Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target         at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:387)         at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:292)         at sun.security.validator.Validator.validate(Validator.java:260)         at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324)     … Read more

Draw Tree Or Graph Online Using Plain Text

Sometimes we need to draw a binary tree or graph online to explain related stuffs. I wanted to share a website where you can write your tree or graph definition in plain english & you will get a graphical representation of it. You will just have to define relations between the nodes in text, that’s … Read more

How To Switch To HTML Editor In Google Blogger

Blogger visual editor settings is now on the left hand side just under “Title” section. I had a bit of trouble changing from compose view to HTML view. It could have been a bit more prominent as people do toggle between normal blog composer view & HTML editor view. Anyways, please take a look at … Read more

Identify A Song Name By Its Tune

Sometimes you just stumble into some particular tune while surfing. Maybe somebody has used a particular music piece or song as a background sound for a video. And you want to listen to that whole song or music. But you don’t know the name of it. In that case, https://www.watzatsong.com/en can help you. You just upload the … Read more

What Is The RSS Feed URL Of A Blogger Blog

Blogspot blogs do have a RSS feed url by default & you don’t need to use FeedBurner type of feed management tool to create a new one. Previously Blogger blog used to have only atom feed. That format still exists. But Google Blogger also introduced RSS feed format that is readily available. Just replace domain … Read more

How To Find Recurring Sequence In A Fraction

We are here to solve a LeetCode problem “166. Fraction to Recurring Decimal“. The problem states that: Given two integers representing the numerator and denominator of a fraction, return the fraction in string format. If the fractional part is repeating, enclose the repeating part in parentheses. Non-repeating Sequence Example: Input: numerator = 1, denominator = … Read more