// DrJava saved history v2
import java.awt.*;
DrawingPanel p1 = new DrawingPanel(400, 200);
DrawingPanel p2 = new DrawingPanel(100, 500);
p1.setBackground(Color.BLUE);
p2.setBackground(Color.RED);
setBackground(Color.GREEN);
Point pt = new Point(10, 30);
pt
x
pt.x
pt.y
3 * pt.x + 4
pt.x = 1000;
pt.x
pt.y
pt.setLocation(10, 50);
pt
pt.x = 10
pt.y = 50;
pt = (10, 50);
pt = new Point(10, 50);
pt
pt
pt.translate(-1, 1);
pt
pt.setLocation(-1, 1);
pt
Point pt2  = new Point(5, 7);
pt
pt2
pt.distance(pt2)
Math.sqrt( Math.pow(pt.x - pt2.x, 2) + Math.pow(pt.y - pt2.y, 2) )
pt.distance(pt)
pt2.distance(pt)
pt.distance(pt2)
p1
p2
DrawingPanel p3 = p1;
p1.setBackground(Color.YELLOW);
p3.setBackground(Color.PINK);
p1 = p2;
p1.setBackground(Color.YELLOW);
p3 = p2;
p2.setBackground(Color.GREEN);
p1.setBackground(Color.BLACK);
p2.setBackground(Color.BLACK);
p3.setBackground(Color.BLACK);
pt
pt2
Point pt3 = pt;
pt3
pt3.x = 1000000;
pt3
pt
String s = "hello there";
s
s.length()
s.toUpperCase()
import java.util.*;
Scanner console = new Scanner(System.in);
String input = console.next();
input
String st = new String("Hello there");
st
String st = "Hello there";
st = "Hello there";