编辑代码

class Main {
	public static void main(String[] args) {
        //JSRUN引擎2.0，支持多达30种语言在线运行，全仿真在线交互输入输出。
		System.out.println("Hello world!   - java.jsrun.net ");
	}
}
/*HelloController
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Label;
import javafx.scene.control.TreeItem;
import javafx.scene.control.TreeView;
import javafx.scene.input.MouseEvent;
import javafx.fxml.Initializable;

import java.net.URL;
import java.util.ResourceBundle;

public class HelloController implements Initializable {
    @FXML
    private Label welcomeText;

    @FXML
    private TreeView treeView;
    @FXML
    protected void onHelloButtonClick() {
        welcomeText.setText("Welcome to JavaFX Application!");
    }
    @FXML
    protected void handleLabelClick(MouseEvent mouseEvent) {
        welcomeText.setText("Label clicked!");
    }

    public HelloController(){
        System.out.println("yyyyyyyyyyyyyyyy");
    }
    public void initialize(){
        System.out.println("1111111111111111");

    }
    @Override
    public void initialize(URL location, ResourceBundle resources) {
        System.out.println("2222222222222222");
        TreeItem<String>rootItem = new TreeItem<>("Root");
        TreeItem<String>childItem = new TreeItem<>("Child");
        rootItem.getChildren().add(childItem);
        treeView.setRoot(rootItem);
    }

    public void onActionLogin(ActionEvent actionEvent) {
    }
}
*/
/*
<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.geometry.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>


<BorderPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity"
            prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/17.0.2-ea"
            xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.example.demo3.HelloController">
   <top>
      <VBox BorderPane.alignment="CENTER">
         <children>
            <MenuBar>
              <menus>
                <Menu mnemonicParsing="false" text="File">
                  <items>
                    <MenuItem mnemonicParsing="false" text="Close" />
                  </items>
                </Menu>
                <Menu mnemonicParsing="false" text="Edit">
                  <items>
                    <MenuItem mnemonicParsing="false" text="Delete" />
                  </items>
                </Menu>
                <Menu mnemonicParsing="false" text="Help">
                  <items>
                    <MenuItem mnemonicParsing="false" text="About" />
                  </items>
                </Menu>
              </menus>
            </MenuBar>
            <HBox spacing="5.0">
               <children>
                  <TextField promptText="username" />
                  <TextField promptText="password" />
                  <Region HBox.hgrow="ALWAYS" />
                  <Button fx:id="login" mnemonicParsing="false" onAction="#onActionLogin" text="LogIn" />
                  <Button mnemonicParsing="false" text="Setting" />
               </children>
               <VBox.margin>
                  <Insets bottom="8.0" left="8.0" right="8.0" top="8.0" />
               </VBox.margin>
               <padding>
                  <Insets bottom="2.0" left="2.0" right="2.0" top="2.0" />
               </padding>
            </HBox>
         </children>
      </VBox>
   </top>
   <left>
      <TreeView id="treeView" fx:id="treeView" BorderPane.alignment="CENTER" />
   </left>
   <center>
      <TextArea prefHeight="200.0" prefWidth="200.0" BorderPane.alignment="CENTER" />
   </center>
   <bottom>
      <HBox BorderPane.alignment="CENTER">
         <children>
            <Label text="Label" />
         </children>
      </HBox>
   </bottom>
</BorderPane>
*/