complexConstructor.java

// simple constructor
//
private final int x;
private final int y;
private final String z;
​
public MyClass(int x, int y, String z) {
    this.x = x;
    this.y = y;
    this.z = z;
}
​
​
// complex building
//
public static MyClass create(List<Stuff> list, Set<Stuff> set) {
    // int x = some brains...
    // int y = more brains...
    // other brains...
    // String z = more complex stuff here
    //
    return new MyClass(x, y, z);
}
​
private final int x;
private final int y;
private final String z;
​
private MyClass(int x, int y, String z) {
    this.x = x;
    this.y = y;
    this.z = z;
}