Programmieren II on Windows

Install JDK 25

• Open PowerShell as administrator to install Java:

winget install EclipseAdoptium.Temurin.25.JDK

• Restart PowerShell
• Verify the installation, make sure that the version is “25” and the name contains “OpenJDK Runtime Environment Temurin”:

java -version

• The output should look like this:

openjdk version "25" 2025-09-16 LTS
OpenJDK Runtime Environment Temurin-25+36 (build 25+36-LTS)
OpenJDK 64-Bit Server VM Temurin-25+36 (build 25+36-LTS, mixed mode, sharing)

Install Gradle

• Install Gradle
• Restart PowerShell
• Verify the installation, make sure that the version is “9”:

gradle -version

• The output should look like this:

------------------------------------------------------------
Gradle 9.3.1
------------------------------------------------------------

Install Git (optional)

• Install Git

winget install --id Git.Git -e --source winget 

• Restart PowerShell
• Verify the installation:

git -v

• The output should look like this:

git version 2.51.0

Install IntelliJ

• Install the JetBrains Toolbox
• Open JetBrains Toolbox and click “install” on “IntelliJ IDEA”.
• Open IntelliJ and create a new Java project:
  • Name: test
  • Location: “~\IdeaProjects”
  • Build system: Gradle
  • JDK: Eclipse Temurin 25
  • Gradle DSL: Kotlin
  • Add Sample Code: yes

• In your project open “src/main/java/org.example/Main.java”
• Press the green play button next to the main method and verify that everything works correctly