1. 소스코드 import javafx.application.Application; import javafx.geometry.Insets; import javafx.scene.Scene; import javafx.scene.control.*; import javafx.scene.layout.BorderPane; import javafx.scene.layout.HBox; import javafx.scene.layout.VBox; import javafx.stage.Stage; import javax.swing.*; import java.text.DecimalFormat; import java.util.*; public class MyApp extends Application { // 연산스택 Stack s..