Java语言程序设计 第十四章 （14.1、14.2、14.3、14.4、12.5、14.6）

程序小白，希望和大家多交流，共同学习
因为没有第十版的汉语电子书，（有的汉语版是第八版，使用的还是Swing）这部分内容只能使用英语版截屏。



14.1

//将image文件夹中的照片加载出来
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.image.ImageView;
import javafx.geometry.Insets;
import javafx.scene.layout.GridPane;

public class ShowFlag extends Application
{
    @Override
    public void start(Stage primaryStage)
    {
        GridPane pane = new GridPane();
        pane.setPadding(new Insets(5, 5, 5, 5));
        pane.setHgap(10);
        pane.setVgap(10);
        ImageView p1 = new ImageView("image/flag5.gif");
        ImageView p2 = new ImageView("image/flag3.gif");
        ImageView p3 = new ImageView("image/flag2.gif");
        ImageView p4 = new ImageView("image/flag6.gif");

        pane.add(p1, 0, 0);
        pane.add(p2, 1, 0);
        pane.add(p3, 0, 1);
        pane.add(p4, 1, 1);

        Scene scene = new Scene(pane);
        primaryStage.setTitle("ShowFlag");
        primaryStage.setScene(scene);
        primaryStage.show();
    }
}

14.2

import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.image.ImageView;
import javafx.scene.layout.GridPane;
import javafx.geometry.Insets;

public class WellChessboard extends Application
{
    @Override
    public void start(Stage primaryStage)
    {
        GridPane pane = new GridPane();
        pane.setPadding(new Insets(8, 8, 8, 8));
        pane.setHgap(8);
        pane.setVgap(8);

        for (int column = 0; column < 3; column++)
        {
            for (int row = 0; row < 3; row++)
            {
                int i = (int)(Math.random() * 3);
                if (i != 2)
                {
                    pane.add(getNode(i), column, row);
                }
            }
        }

        Scene scene = new Scene(pane);
        primaryStage.setTitle("WellChessboard");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    //随机生成井字游戏中的操作
    public ImageView getNode(int i)
    {
        if (i == 0)
        {
            return new ImageView("image/o.gif");
        }
        else
        {
            return new ImageView("image/x.gif");
        }
    }
}

14.3

//随机显示一副扑克牌中任意三张
//采取的随机方式：数组转列表，列表调用Collections.shuffle()方法
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.HBox;
import javafx.geometry.Insets;
import javafx.scene.image.ImageView;
import java.util.Arrays;
import java.util.ArrayList;
import java.util.Collections;

public class ShowCard extends Application
{
    @Override
    public void start(Stage primaryStage)
    {
        HBox pane = new HBox(5);
        pane.setPadding(new Insets(5, 5, 5, 5));
        Integer[] array = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
            11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
            21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
            31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
            41, 42, 43, 44, 45, 46, 47, 48, 49, 50,
            51, 52};
        ArrayList list = new ArrayList<>(Arrays.asList(array));
        Collections.shuffle(list);

        ImageView p1 = new ImageView("image/card/" + Integer.valueOf(list.get(0)) + ".png");
        ImageView p2 = new ImageView("image/card/" + Integer.valueOf(list.get(1)) + ".png");
        ImageView p3 = new ImageView("image/card/" + Integer.valueOf(list.get(2)) + ".png");
        pane.getChildren().addAll(p1, p2, p3);

        Scene scene = new Scene(pane);
        primaryStage.setTitle("ShowCard");
        primaryStage.setScene(scene);
        primaryStage.show();
    }
}

14.4_1

//多次显示一旋转后的字符串
//使用方法就是直接将Label旋转
//但是由于中心不好找，要将边距设置好
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.HBox;
import javafx.scene.paint.Color;
import javafx.scene.control.Label;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.FontPosture;
import javafx.geometry.Insets;

public class ShowLabel_Java extends Application
{
    @Override
    public void start(Stage primaryStage)
    {
        HBox pane = new HBox(10);
        pane.setPadding(new Insets(15, 15, 15, 15));
        for (int i = 0; i < 5; i++)
        {
            Label write = new Label("Java");
            write.setFont(Font.font("TimesRomes", FontWeight.BOLD, FontPosture.ITALIC, 22));
            write.setRotate(90);
            //这个设置可以有效的防止旋转后的图形超过面
            HBox.setMargin(write, new Insets(15, 0, 15, 0));
            //设置Label中字体的颜色
            write.setTextFill(Color.color(Math.random(), Math.random(), Math.random(), Math.random()));
            pane.getChildren().add(write);
        }

        Scene scene = new Scene(pane);
        primaryStage.setTitle("ShowLabel");
        primaryStage.setScene(scene);
        primaryStage.show();
    }
}

14.4_2

//多次显示一旋转后的字符串
//使用VBox将字一一旋转后，再放在HBox中
//使得单词分开，不好看
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.control.Label;
import javafx.scene.text.Font;
import javafx.geometry.Insets;
import javafx.scene.paint.Color;
import javafx.scene.text.FontWeight;
import javafx.scene.text.FontPosture;

public class ShowHVBox_Java extends Application
{
    @Override
    public void start(Stage primaryStage)
    {
        HBox pane = new HBox(15);
        pane.setPadding(new Insets(15, 15, 15, 15));
        for (int i = 0; i < 5; i++)
        {
            pane.getChildren().add(getVBox());
        }

        Scene scene = new Scene(pane);
        primaryStage.setTitle("ShowHVBox_Java");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public VBox getVBox()
    {
        VBox pane = new VBox();
        String str = "JAVA";
        int length = str.length();
        Color color = new  Color(Math.random(), Math.random(), Math.random(), Math.random());
        for (int i = 0; i < length; i++)
        {
            Label lb = new Label(str.charAt(i) + "");
            lb.setFont(Font.font("TimesRomes", FontWeight.BOLD, FontPosture.ITALIC, 22));
            lb.setTextFill(color);
            lb.setRotate(90);
            pane.setMargin(lb, new Insets(0, 15, 0, 15));
            pane.getChildren().add(lb);
        }

        return pane;
    }
}

14.4_3

//多次显示一旋转后的字符串
//每个字符串现在VBox中设置好，然后将面板加到HBox面板中
//中心不好找，要将边距设置好
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.control.Label;
import javafx.scene.text.Font;
import javafx.geometry.Insets;
import javafx.scene.text.Text;
import javafx.scene.paint.Color;
import javafx.scene.text.FontWeight;
import javafx.scene.text.FontPosture;

public class ShowHVBoxText_Java extends Application
{
    @Override
    public void start(Stage primaryStage)
    {
        HBox pane = new HBox(15);
        pane.setPadding(new Insets(15, 15, 15, 15));
        for (int i = 0; i < 5; i++)
        {
            pane.getChildren().add(getVBox());
        }

        Scene scene = new Scene(pane);
        primaryStage.setTitle("ShowHVBoxText_Java");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public VBox getVBox()
    {
        VBox pane = new VBox();
        Color color = new  Color(Math.random(), Math.random(), Math.random(), Math.random());
        Text lb = new Text("Java");
        lb.setFont(Font.font("TimesRomes", FontWeight.BOLD, FontPosture.ITALIC, 22));
        lb.setFill(color);
        lb.setRotate(90);
        pane.getChildren().add(lb);
        return pane;
    }
}

14.5

//圆形显示一个字符串，并且每个单词也要指向圆心
//初中数学，找坐标和角度关系
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.text.Text;
import javafx.scene.text.Font;
import javafx.scene.paint.Color;
import javafx.scene.text.FontWeight;
import javafx.scene.text.FontPosture;
import javafx.scene.layout.Pane;

public class ShowString extends Application
{
    @Override
    public void start(Stage primaryStage)
    {
        Pane pane = new Pane();
        String str = "WELCOM TO JAVA";
        int length = str.length();
        final double centerX = 200, centerY = 200, radius = 100;
        double divide = 2 * Math.PI / length;

        for (int i = 0; i < length; i++)
        {
            double newX = centerX + radius * Math.cos(i * divide);
            double newY = centerY + radius * Math.sin(i * divide);
            Text t = new Text(newX, newY, str.charAt(i) + "");
            t.setFill(Color.RED);
            //Text中的setFont(Font)
            t.setFont(Font.font("MyFont", FontWeight.BOLD, FontPosture.ITALIC, 15));
            //旋转字体
            int r = (int)((Math.PI / 2 + i * divide) / (2 * Math.PI) * 360);
            t.setRotate(r);
            pane.getChildren().add(t);
        }

        Scene scene = new Scene(pane, 400, 400);
        primaryStage.setTitle("ShowString");
        primaryStage.setScene(scene);
        primaryStage.show();
    }
}

15.6

//写着写着就写出了兴趣，把方方正正的棋盘改成了
//将面板划分为64份，颜色按照棋盘分布，大小随着窗体大小改变
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.GridPane;
import javafx.scene.paint.Color;
import javafx.geometry.Insets;
import javafx.scene.shape.Rectangle;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.SimpleDoubleProperty;

public class Checkerboard extends Application
{
    @Override
    public void start(Stage primaryStage)
    {
        GridPane pane = new GridPane();
        //按照黑白存在的规律，先奇数行的白，然后奇数行的黑
        //接着偶数行的黑，最后偶数行的白
        for (int column = 0; column < 8; column = column + 2)
        {
            for (int row = 0; row < 8; row = row + 2)
            {
                pane.add(getSquare(column, row, pane, 0), column, row);
            }
        }
        for (int column = 1; column < 8; column = column + 2)
        {
            for (int row = 0; row < 8; row = row + 2)
            {
                pane.add(getSquare(column, row, pane, 1), column, row);
            }
        }
        for (int column = 0; column < 8; column = column + 2)
        {
            for (int row = 1; row < 8; row = row + 2)
            {
                pane.add(getSquare(column, row, pane, 1), column, row);
            }
        }
        for (int column = 1; column < 8; column = column + 2)
        {
            for (int row = 1; row < 8; row = row + 2)
            {
                pane.add(getSquare(column, row, pane, 0), column, row);
            }
        }

        Scene scene = new Scene(pane);
        primaryStage.setTitle("Checkerbord");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    //按照给定行和列返回设定确定位置，并返回（使用绑定bind）
    public Rectangle getSquare(int column, int row, GridPane pane, int judge)
    {
        Rectangle re = new Rectangle();
        //找到每个格子的起始坐标，面板的宽和高：pane.width,pane.height
        re.xProperty().bind(pane.widthProperty().divide(8).multiply(row));
        re.yProperty().bind(pane.heightProperty().divide(8).multiply(column));
        //确定每个格子的高和宽
        re.widthProperty().bind(pane.widthProperty().divide(8));
        re.heightProperty().bind(pane.heightProperty().divide(8));

        if (judge == 0)
        {
            re.setFill(Color.WHITE);
            re.setStroke(Color.WHITE);
        }
        else if (judge == 1)
        {
            re.setFill(Color.BLACK);
            re.setStroke(Color.BLACK);
        }

        return re;
    }
}