The following code shows how to output one property for debug.
/*from w w w.ja v a 2s . c o m*/ import java.util.Arrays; import java.util.List; public class Main { public static void main(String[] args) { List<Point> points = Arrays.asList(new Point(12, 2)); points.stream().map(p -> p.getX()).forEach(System.out::println); } } class Point { private int x; private int y; public Point(int x, int y) { this.x = x; this.y = y; } public int getX() { return x; } public void setX(int x) { this.x = x; } }
The code above generates the following result.