Thread: Java Basic - explanation of for loops

class GraphPanel extends Panel
//GraphPanel is being defined as subclass of Panel
    implements Runnable, MouseListener, MouseMotionListener { //runnable
//using an interface, allows q method from ore than one superclass
    Graph graph; //attribute  or variable
    int nnodes; //attribute  or variable, primitive data type
    Node nodes[] = new Node[100];
    int nedges; //attribute  or variable intial value
    Edge edges[] = new Edge[200];
    Thread relaxer;
 
    GraphPanel(Graph graph) {
    this.graph = graph;
    addMouseListener(this);
    }
 
 
    int findNode(String lbl) {
    for (int i = 0 ; i < nnodes ; i++) {
//statement executes if  test returns true
        }
    }

Just in regards to the for loop, not sure what the i < nnodes is testing. Is it comparing i to the individual value of each nnodes variable, or is it comparing to see whether i is less than the length of nnodes array?

nnodes is an integer variable. It's comparing i to the integer value of nnodes.