Some cool tricks in Java

Java☝:: A most beautiful and powerful programming language👌.

as much as you'll deep dive into Java you'll learn something new.

Here are some Amazing and cool trick's -

1-

Do you know what will be the output of the below statement? 👇

System.out.println(0123);
o/p = 83 but why?

Click on Below - 👇👇👇

https://www.javaoneworld.com/2020/05/why-output-of-012-is-10-and-0123-is-83.html

2- Java String

Concatenation - concat() Vs the + Operator

concat() --

if want to concat str1 with str2 where str1 is null.

str1 = null;
str2 = "javaoneworld";

str1.concat(str2);

you'll get NullPointerException👎👎.

• Operator --

if want to concat str1 with str2 where str1 is null.

str1 = null;
str2 = "javaoneworld";

str1+str2;

you'll not get NullPointerException instead you'll get some  output😅😀.

o/p - nulljavaoneworld

Follow the below beautiful url for some more cool tricks.

How to execute commented code? and more.

https://www.javaoneworld.com/2021/07/java-amazing-interesting-and-cool-tricks.html

Thanks a bunch for being here.

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