10 UMLClass 610 170 100 30 Object UMLClass 640 460 100 30 JButton UMLClass 350 450 100 30 JFrame Relation 370 190 280 280 lt=<<- 260.0;10.0;10.0;260.0 Relation 650 190 50 290 lt=<<- 10.0;10.0;30.0;270.0 UMLClass 760 460 100 30 ActionEvent Relation 680 190 120 290 lt=<<- 10.0;10.0;100.0;270.0