PPT Slide

public void initializeTreeNode(int iNumberNodes) {

if (myTree == null) {

if (DEBUG)

System.out.println (“Null tree found!”);

throw new NullPointerException (“Null tree found”);

/* NOTE: Runtime exception;

no need to declare propagation */

}

else {

for (int i=0; i < iNumberNodes; i++) { {

TreeNode newNode = new TreeNode( i );

tree.insertNode(newNode);

}

} // initializeTreeNode

When to Use Exceptions: Error with objects