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Online JavaScript to Java Converter

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Additional Instructions

How to use this tool?

This free online converter lets you convert code from JavaScript to Java in a click of a button. To use this converter, take the following steps -

Type or paste your JavaScript code in the input box.
Click on the "Convert" button.
The converted Java code will be displayed in the output box.

Examples

The following are examples of code conversion from JavaScript to Java using this converter. Note that you may not always get the same code since it is generated by an AI language model which is not 100% deterministic and gets updated from time to time.

Example 1 - Is String Palindrome

Program that checks if a string is a palindrome or not.

JavaScript Code:

Java Code:

Example 2 - Even or Odd

A well commented function to check if a number if odd or even.

JavaScript Code:

Java Code:

Differences

The following are some key differences between JavaScript and Java.

Characteristic	JavaScript	Java
Syntax	JavaScript has a C-style syntax with curly braces, while also supporting functional programming features such as anonymous functions and closures.	Java has a syntax similar to C++, with curly braces and semicolons to end statements. It is an object-oriented language with a focus on strong typing.
Paradigm	JavaScript is a multi-paradigm language that supports both object-oriented and functional programming styles.	Java is an object-oriented language that supports imperative and declarative programming styles.
Typing	JavaScript is a dynamically typed language, meaning that variable types are determined at runtime.	Java is a statically typed language, meaning that variable types are determined at compile time.
Performance	JavaScript is generally slower than Java due to its interpreted nature and lack of native multithreading support.	Java is generally faster than JavaScript due to its compiled nature and support for native multithreading.
Libraries and frameworks	JavaScript has a vast array of libraries and frameworks available, including React, Angular, and Vue for front-end development, and Node.js for back-end development.	Java has a wide range of libraries and frameworks available, including Spring and Hibernate for enterprise development, and Android for mobile development.
Community and support	JavaScript has a large and active community with many online resources and forums available for support.	Java has a large and active community with many online resources and forums available for support.
Learning curve	JavaScript has a relatively low learning curve due to its forgiving nature and the abundance of online resources available.	Java has a steeper learning curve due to its strong typing and more complex syntax, but there are many resources available for learning.

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