Question

At the moment I have an array of

public Module[]moduleArray = new Module[4];    

and to output it i’m using

public void displayModules()
 {
    for (int i = 0; i < moduleArray.length; i++)
    {
       System.out.println(moduleArray[i]); 
    }        
 }

However it’s outputting

Module@1f5e4ae5
Module@67871079
null
null

Answer 1

Implement / override toString() in the Module class. When you see the Module@xyz String representation it is because the only implementation of toString() for the Module class is the Object class’s implementation. Since Object doesn’t know anything about Module it just outputs the class name and an instance id.