For standard Windows users: from https://www.java.com/download .

Java 1.4.2 was released before Windows Vista, Windows 7, 8, 10, or 11 existed. Therefore, compatibility is a major issue.

Right-click the .exe installer and select . Modern Windows permissions may block the installer from writing to the registry otherwise. Step 2: Compatibility Mode If the installer fails to launch: Right-click the installer. Go to Properties > Compatibility .

public class HelloWorld public static void main(String[] args) // In 1.4.2, we didn't have Generics or the 'foreach' loop yet! System.out.println("Hello from Java 1.4.2!"); Use code with caution. Copied to clipboard Java: Download/Installation Instructions

Go to the Oracle website and look for the "Java Archive" section.

Only run Java 1.4.2 on an air-gapped machine (a computer with no internet connection or network access) strictly for the purpose of running a specific legacy application. Never use it for general web browsing.