Java in Termux – Installation, Usage & Basic Commands

Java is a well-known programming language used to create apps, software, and games. It is simple to understand and follows a clear structure, which makes it a good choice for beginners. Learning Java also helps you build strong programming basics.

Installation Commands

Update Termux and install Java:

pkg update && pkg upgrade

Install OpenJDK (recommended version):

pkg install openjdk-17 -y

You can also install other versions:

pkg install openjdk-21

Check Java version:

java -version

Check compiler version:

javac -version

Usage Commands

Create a Java file:

nano Hello.java

Write simple Java code:

public class Hello {
    public static void main(String[] args) {
        System.out.println("Hello Java in Termux");
    }
}

Save and exit:

• CTRL + X → Y → Enter

Compile the Java program:

javac Hello.java

Run the program:

java Hello

Compile and run in one line:

javac Hello.java && java Hello

Run Java file directly:

java Hello.java

Create JAR file:

jar cvf hello.jar Hello.class

Run JAR file:

java -jar hello.jar