Constructor best practices
java, software-design
Solution
The latter. The convention is that the constructor creates a blank object that is ready to do work, not an object that immediately begins to work.
Although both will function, the former is unclear.
Problem
Lets say we have a class with only 1 function, eg: compute DFS. Which of the following is preferred approach and why ? ``` Approach 1: public class DFS { public DFS(Graph g) { dfs(g); // <--- computation invoked from constructor. } private void DFS(Graph g) { // do dfs traversal } } Client: DFS dfs = new DFS(graph); Approach 2: public class DFS { Graph g; public DFS(Graph g) { this.g = g } private void doDFS() { // do dfs traversal } } Client: DFS dfs = new DFS(graph); dfs.doDFS(); ```