package swing.frame; import javax.swing.JFrame; public class MyFrame extends JFrame { public MyFrame(String title) { this.setTitle(title); //this없어도됨 //title설정 this.setSize(680, 700);//size설정(width,height) setLocation(800, 300); //위치 설정(x,y) //종료관리(보통 EXIT_ON_CLOSE를 사용, 상수3) setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //창그리기 this.setVisible(true); } public static void main(String[] args) { /..