梁勇java程序设计基础答案

科技前沿 • 2024-12-25 20:59 • 阅读 33

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Java语言程序设计（基础篇）》（第10版梁勇著）

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第十五章练习题答案

15.1

importjavafx.application.Application;

importjavafx.geometry.Pos;

importjavafx.scene.Scene;

importjavafx.scene.control.Button;

importjavafx.scene.image.ImageView;

importjavafx.scene.layout.BorderPane;

importjavafx.scene.layout.HBox;

i梁勇java程序设计基础答案mportjavafx.stage.Stage;

importjava.util.ArrayList;

publicclassExercise15_01extendsApplication{

@Override

//OverridethestartmethodintheApplicationclass

publicvoidstart(StageprimaryStage){

//Therearetwowaysforshuffling.Oneistousethehintinthebook.

//Theotherwayistousethestaticshufflemethodinthe

java.util.Collectionsclass.

ArrayListIntegerlist=newArrayList();

for(inti=1;i=52;i++){

list.add(i);

}

java.util.Collections.shuffle(list);

HBoxhBox=newHBox(5);

hBox.setAlignment(Pos.CENTER);

hBox.getChildren().add(newImageView(ImageView(+list.get(0)++list.get(0)+

));

hBox.getChildren().add(newImageView(ImageView(+list.get(1)++list.get(1)+

));

hBox.getChildren().add(newImageView(ImageView(+list.get(2)++list.get(2)+

));

hBox.getChildren().add(newImageView(ImageView(+list.get(3)++list.get(3)+

));

//Createabutton

ButtonbtRefresh=newButton(Button();

btRefresh.setOnAction(e-{

java.util.Collections.shuffle(list);

hBox.getChildren().clear();

hBox.getChildren().add(newImageView(ImageView(+list.get(0)++list.get(0)+

));