Generate Java changelogs

Generate a concise code change-log entry based on a diff file for Java code.

You can query a model directly and test the results returned when using different parameter values with the Cloud console, or by calling the Vertex AI API directly.

Prompt Freeform

Generate a concise single-line changelog that summarizes the key code change in this commit.

--- /your/code/directory/tree_traversal.java +++ //your/code/directory/tree_traversal.java class Node {  int data;  Node left, right;  public Node(int data) {  this.data = data;  left = right = null;  } } public class TreeTraversal {  Node root; - // Recursive Traversal Methods - public void preorderRecursive(Node node) { - if (node != null) { - System.out.print(node.data + " "); - preorderRecursive(node.left); - preorderRecursive(node.right); - } - } + // Iterative Traversal Methods (Using a Stack) + public void preorderIterative(Node node) { + if (node == null) { + return; + } + Stack<Node> stack = new Stack<>(); + stack.push(node); + + while (!stack.isEmpty()) { + Node current = stack.pop(); + System.out.print(current.data + " "); + + // Push right child first (changes order compared to recursive) + if (current.right != null) { + stack.push(current.right); + } + if (current.left != null) { + stack.push(current.left); + } + } + } }

Response

refactor: Convert preorder traversal from a recursive to an iterative implementation.
Model: gemini-2.5-pro
Temperature: 0.2
Max output tokens: 8192
TopK: 40.0
TopP: 0.95