How to Sort ArrayList of String and Integer in Java

In this tutorial you will learn how to sort ArrayList of String or Integer in Java. We can easily sort an arraylist in ascending or descending order using Collections.sort() method. Below I have shared simple example for each of them. Sort ArratList in Java Example to Sort ArrayList of String Below program sorts an arraylist of String type.

  Output Sort in ascending order Android IOS Linux Mac Windows Sort in descending order Windows Mac Linux IOS Android  

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Convert Image to Base64 String or Base64 String to Image in Java

In this tutorial you will learn how to convert or encode image to Base64 string and convert or decode Base64 string to image in Java.   What is Base64? Base64 is a group of similar binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation.     Why we need to convert image to Base64 string? Let’s consider some real life scenarios. What we will do if we want to store

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