Question

I have a Project class that holds a name and various other attributes. Everytime a new Project is made it is added to an ArrayList.

ArrayList<Project> mProject = new ArrayList<Project>();

I have most of the code in a different question. I don’t feel like I should ask it there as it has a different question on it. But if you want to check out more of the code it’s here:

Can I use a method from a different class that I have added to an ArrayList?

And here is where I’m stuck. This is the first time I’ve used this type of loop before and I don’t know what’s going on. I have seen tutorials just pass over this loop with a “you should know what happens here” attituded. So if you could explain this loop that would be great also.

And on to the code:

System.out.println("Select one of the fallowing projects:");    
for (Project proj : mProject){
    int i= 1;
    i++;
    System.out.println( i + ": " + proj.returnName());
}

My output is this:

Select one of the fallowing projects:

2: Greg

2: Mike

It looks like it’s not going though the code. So I’d love an explanation or a tutorial with this loop. Thanks.

If I use a regular loop how whould I go about using the methods from the mProject arraylist?

for ( int i = 0; i<= mProject.size() ; i++){
    Project proj = mProject;// This won't compile. 
        if (choice ==  proj.returnName()){                  
        }
}

Answer 1

If you move the int declaration out of the loop it will increment as you would expect, it is getting reassigned every time:

   int i= 1; 
    for (Project proj : mProject){
      i++;
      System.out.println( i + ": " + proj.returnName());}