Fixed hyperlinks and some mistakes in examples

README.md

@@ -12,4 +12,4 @@ Welcome to the exercises for programming tools. The exercises are located in thi
 
 ## Week 1 Exercises
 
-Start familiarising yourself with the topic of the week from the file [week 1](https://gitlab.utu.fi/TKO_2116/viikko-1/-/blob/main/viikko1.md)
+Start familiarising yourself with the topic of the week from the file [week 1](week_1.md)

week1.md → week_1.md

@@ -23,7 +23,7 @@ You can install the Java Development Kit (JDK) by downloading the package from e
 * [Open JDK's website](https://jdk.java.net/)
 * [Adoptium Working Group's website](https://adoptium.net/)
 
-We use Java version 11 in ViLLE, but you can install the latest version on your machine (version 19 has just been released). There are no significant differences in the features used in the course between these versions.
+We use Java version 11 in ViLLE, but you can install the latest version on your machine (version 21 has just been released). There are no significant differences in the features used in the course between these versions.
 
 You can have multiple Java versions on your machine at the same time. This can sometimes cause problems with compiling certain programs - however, you can (usually) select the version separately in the Java development environment.
 
@@ -358,8 +358,8 @@ Write a Java program that works from the command line as shown in the examples b
 ```
 javac Longest.java
 
-java Longest one two
-Longest parameter: two
+java Longest one two three
+Longest parameter: three
 
 java Longest car moped snowmobile skis bicycle
 Longest parameter: snowmobile