第4次作业类测试代码+142+王娇
类图：
代码部分：
1 package sample; 2 3 import javafx.application.Application; 4 import javafx.event.EventHandler; 5 import javafx.fxml.FXMLLoader; 6 import javafx.scene.Parent; 7 import javafx.scene.Scene; 8 import javafx.scene.control.Alert; 9 import javafx.scene.control.Button; 10 import javafx.scene.control.TextField; 11 import javafx.scene.input.MouseEvent; 12 import javafx.stage.Stage; 13 14 15 public class Main extends Application { 16 17 @Override 18 public void start(Stage primaryStage) throws Exception { 19 Parent root = FXMLLoader.load(getClass().getResource("sample.fxml")); 20 primaryStage.setTitle("计算三角形面积--王娇"); 21 primaryStage.setScene(new Scene(root, 600, 400)); 22 TextField mTextFiled_A = (TextField) root.lookup("#textField_A"); 23 TextField mTextFiled_B = (TextField) root.lookup("#textField_B"); 24 TextField mTextFiled_C = (TextField) root.lookup("#textField_C"); 25 TextField mTextFiled_tan = (TextField) root.lookup("#textField_tan"); 26 TextField mTextFiled_tanS = (TextField) root.lookup("#textField_tanS"); 27 TextField mTextFiled_tanC = (TextField) root.lookup("#textField_tanC"); 28 Button button_OK = (Button) root.lookup("#button_OK"); 29 button_OK.setOnMouseClicked(new EventHandler<MouseEvent>() { 30 @Override 31 public void handle(MouseEvent event) { 32 try { 33 int a = Integer.parseInt(mTextFiled_A.getText()); 34 int b = Integer.parseInt(mTextFiled_B.getText()); 35 int c = Integer.parseInt(mTextFiled_C.getText()); 36 String result = triangle(a, b, c); 37 mTextFiled_tan.setText(result); 38 if (!result.equals("边的值不在范围内！") && !result.equals("不构成三角形")) { 39 mTextFiled_tanS.setText(tanS(a, b, c) + ""); 40 mTextFiled_tanC.setText(tanC(a, b, c) + ""); 41 } else { 42 mTextFiled_tanS.setText("0"); 43 mTextFiled_tanC.setText("0"); 44 } 45 } 46 catch (Exception e){ 47 Alert alert = new Alert(Alert.AlertType.INFORMATION); 48 alert.setHeaderText("请输入数字"); 49 alert.show(); 50 } 51 } 52 }); 53 primaryStage.show(); 54 } 55 56 public static String triangle(int a, int b, int c) { 57 if (!((1 <= a && a <= 100) && (1 <= b && b <= 100) && (1 <= c && c <= 100))) 58 return "边的值不在范围内！"; 59 if (!((a < b + c) && (b < a + c) && (c < a + b))) 60 return "不构成三角形"; 61 if ((a == b) || (b == c) || (c == a)) 62 if (a == b && b == c) 63 return "等边三角形"; 64 else 65 return "等腰三角形"; 66 else { 67 if ((a * a == b * b + c * c) || (b * b == a * a + c * c) || (c * c == a * a + b * b)) 68 return "直角三角形"; 69 return "一般三角形"; 70 } 71 } 72 73 public static double tanS(int a, int b, int c) { 74 int p = (a + b + c) / 2; 75 return (Math.sqrt(p * (p - a) * (p - b) * (p - c))) ; 76 } 77 78 public static double tanC(int a, int b, int c) { 79 return (a + b + c) ; 80 } 81 82 public static void main(String[] args) { 83 launch(args); 84 } 85 }
界面控制：
<?xml version="1.0" encoding="UTF-8"?> <?import javafx.scene.text.*?> <?import javafx.scene.control.*?> <?import java.lang.*?> <?import javafx.scene.layout.*?> <?import javafx.geometry.Insets?> <?import javafx.scene.layout.GridPane?> <?import javafx.scene.control.Button?> <?import javafx.scene.control.Label?> <Pane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1"> <children> <Button id="button_OK" layoutX="246.0" layoutY="135.0" mnemonicParsing="false" text="OK" /> <Button layoutX="305.0" layoutY="134.0" mnemonicParsing="false" text="Cancel" /> <TextField id="textField_A" layoutX="134.0" layoutY="94.0" prefHeight="23.0" prefWidth="62.0" /> <TextField id="textField_B" layoutX="296.0" layoutY="95.0" prefHeight="23.0" prefWidth="62.0" /> <TextField id="textField_C" layoutX="445.0" layoutY="95.0" prefHeight="23.0" prefWidth="55.0" /> <TextField id="textField_tan" editable="false" layoutX="226.0" layoutY="189.0" /> <Text layoutX="125.0" layoutY="203.0" strokeType="OUTSIDE" strokeWidth="0.0" text="这个三角形是：" wrappingWidth="87.0" /> <Text layoutX="148.0" layoutY="249.0" strokeType="OUTSIDE" strokeWidth="0.0" text="面积是：" /> <Text layoutX="314.0" layoutY="249.0" strokeType="OUTSIDE" strokeWidth="0.0" text="周长是：" /> <Text layoutX="148.0" layoutY="63.0" strokeType="OUTSIDE" strokeWidth="0.0" text="请输入三角形的三条边;" /> <Text layoutX="110.0" layoutY="110.0" strokeType="OUTSIDE" strokeWidth="0.0" text="a：" /> <Text layoutX="275.0" layoutY="111.0" strokeType="OUTSIDE" strokeWidth="0.0" text="b：" /> <Text layoutX="425.0" layoutY="109.0" strokeType="OUTSIDE" strokeWidth="0.0" text="c：" /> <TextField id="textField_tanS" editable="false" layoutX="196.0" layoutY="233.0" prefHeight="23.0" prefWidth="62.0" /> <TextField id="textField_tanC" editable="false" layoutX="365.0" layoutY="234.0" prefHeight="23.0" prefWidth="62.0" /> </children> </Pane>
界面：
三角形，面积，周长点击设置只读，不可编辑。
输入非数字
输入正确
