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Update Java instructions in README #12

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Update Java instructions in README #12

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Update Java instructions in README
felixwellen Nov 21, 2024
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[www] Software instructions: keep the distinction between JVM and JDK
andreasabel Nov 22, 2024
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24 changes: 3 additions & 21 deletions README.md
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Expand Up @@ -310,27 +310,9 @@ java -version
```
We will use version 21 of Java.

You might chose to solve the labs in Java. In this case you need:

- The java compiler `javac`.
- Parser generator: either [ANTLR](https://www.antlr.org/) or the
[CUP](http://www2.cs.tum.edu/projects/cup/) libraries version 0.11b.
- Lexer generator [JFLex](https://jflex.de/) or the [JLex](https://www.cs.princeton.edu/~appel/modern/java/JLex/) libraries.

To set up CUP and JLex, follow these instructions:

1. Download the JAVA archives for
[CUP v11b](https://github.com/BNFC/bnfc/raw/master/testing/data/java-cup-11b.jar),
[CUP v11b runtime](https://github.com/BNFC/bnfc/raw/master/testing/data/java-cup-11b-runtime.jar),
and
[JLex](https://github.com/BNFC/bnfc/raw/master/testing/data/JLex-1.2.6.jar).

2. Make sure they are placed in your `CLASSPATH`.

For example, in Linux or macOS, store these jars in `${HOME}/java-lib/` and add the following line to your shell initialization file.

export CLASSPATH=.:${HOME}/java-lib/java-cup-11b.jar:${HOME}/java-lib/java-cup-11b-runtime.jar:${HOME}/java-lib/JLex-1.2.6.jar:${CLASSPATH}

You might chose to solve the labs in Java.
In this case, you need the Java Development Kit (JDK). You can get all neccessary Java dependencies by installing `openjdk-21` (e.g. with a package manager on Linux/macOS or by downloading [here](https://learn.microsoft.com/en-us/java/openjdk/download) on Windows).
We publish Java stubs for the labs that use [Gradle build tool](https://gradle.org/), preconfigured to install the Java parser generator [CUP](http://www2.cs.tum.edu/projects/cup/) and the lexer generator [JFLex](https://jflex.de/). If you use the stubs, there is not need to install Gradle, CUP and JFlex yourself.

# Student representatives

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