The hope of the ssd1 exercise se7 was helpful

EXE7
....\AlgaeColony.class
....\blank.gif
....\CatFish-down.gif
....\CatFish-left.gif
....\CatFish-right.gif
....\CatFish-up.gif
....\Catfish.java
....\Crocodile-down.gif
....\Crocodile-left.gif
....\Crocodile-right.gif
....\Crocodile-up.gif
....\Crocodile.java
....\HtmlImage.class
....\HtmlPage.class
....\HtmlTable.class
....\initialWorldAlgaeFishCroc.html
....\LivingBeing.class
....\Simulation.class
....\SimulationServlet.class
....\SimulationView.class
....\soln-simulation-coding-methods
....\..............................\Catfish.java
....\..............................\Crocodile.java
....\soln-simulation-coding-methods-support.zip
....\soln-simulation-coding-methods.html
....\soln-simulation-coding-methods.zip

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