Swing 如何在groovy中创建组合框
您能告诉我为什么这在Groovy脚本中不起作用吗?Swing 如何在groovy中创建组合框,swing,groovy,Swing,Groovy,您能告诉我为什么这在Groovy脚本中不起作用吗? 我试图找到一段最符合我需要的代码并对其进行编辑,但它会提示一个错误。不过,该脚本在java中运行良好,至少网站上是这么说的。 我试着从SOAPUI运行它 import java.awt.*; import java.awt.event.*; import javax.swing.*; public class GridLayoutDemo extends JFrame { static final String gapList[]
我试图找到一段最符合我需要的代码并对其进行编辑,但它会提示一个错误。不过,该脚本在java中运行良好,至少网站上是这么说的。 我试着从SOAPUI运行它
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class GridLayoutDemo extends JFrame {
static final String gapList[] = {"0", "10", "15", "20"};
final static int maxGap = 20;
JComboBox horGapComboBox;
JComboBox verGapComboBox;
JButton applyButton = new JButton("Apply gaps");
GridLayout experimentLayout = new GridLayout(0,2);
public GridLayoutDemo(String name) {
super(name);
setResizable(false);
}
public void initGaps() {
horGapComboBox = new JComboBox(gapList);
verGapComboBox = new JComboBox(gapList);
}
public void addComponentsToPane(final Container pane) {
initGaps();
final JPanel compsToExperiment = new JPanel();
compsToExperiment.setLayout(experimentLayout);
JPanel controls = new JPanel();
controls.setLayout(new GridLayout(2,3));
//Set up components preferred size
JButton b = new JButton("Just fake button");
Dimension buttonSize = b.getPreferredSize();
compsToExperiment.setPreferredSize(new Dimension((int)(buttonSize.getWidth() * 2.5)+maxGap,
(int)(buttonSize.getHeight() * 3.5)+maxGap * 2));
//Add buttons to experiment with Grid Layout
compsToExperiment.add(new JButton("Button 1"));
compsToExperiment.add(new JButton("Button 2"));
compsToExperiment.add(new JButton("Button 3"));
compsToExperiment.add(new JButton("Long-Named Button 4"));
compsToExperiment.add(new JButton("5"));
//Add controls to set up horizontal and vertical gaps
controls.add(new Label("Horizontal gap:"));
controls.add(new Label("Vertical gap:"));
controls.add(new Label(" "));
controls.add(horGapComboBox);
controls.add(verGapComboBox);
controls.add(applyButton);
//Process the Apply gaps button press
applyButton.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
//Get the horizontal gap value
String horGap = (String)horGapComboBox.getSelectedItem();
//Get the vertical gap value
String verGap = (String)verGapComboBox.getSelectedItem();
//Set up the horizontal gap value
experimentLayout.setHgap(Integer.parseInt(horGap));
//Set up the vertical gap value
experimentLayout.setVgap(Integer.parseInt(verGap));
//Set up the layout of the buttons
experimentLayout.layoutContainer(compsToExperiment);
}
});
pane.add(compsToExperiment, BorderLayout.NORTH);
pane.add(new JSeparator(), BorderLayout.CENTER);
pane.add(controls, BorderLayout.SOUTH);
}
/**
* Create the GUI and show it. For thread safety,
* this method is invoked from the
* event dispatch thread.
*/
private static void createAndShowGUI() {
//Create and set up the window.
GridLayoutDemo frame = new GridLayoutDemo("GridLayoutDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Set up the content pane.
frame.addComponentsToPane(frame.getContentPane());
//Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
/* Use an appropriate Look and Feel */
try {
//UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
} catch (UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
} catch (IllegalAccessException ex) {
ex.printStackTrace();
} catch (InstantiationException ex) {
ex.printStackTrace();
} catch (ClassNotFoundException ex) {
ex.printStackTrace();
}
/* Turn off metal's use of bold fonts */
UIManager.put("swing.boldMetal", Boolean.FALSE);
//Schedule a job for the event dispatch thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
下一次,请说明您遇到的错误 并非所有Java语法在Groovy中都支持1:1,尽管大多数都支持。
实际上,一行中有两件东西是Groovy不支持的
String-gapList[]
语法,应改为String[]gapList
{“0”、“10”、“15”、“20”}
,相反,您需要编写一个列表文本,并将其转换为数组类型,如[“0”、“10”、“15”、“20”]作为字符串[]
。实际上,当您要分配给的变量被键入时,甚至可以简单地进行转换,因此[“0”、“10”、“15”、“20”]
就足够了static final String gapList[] = {"0", "10", "15", "20"};
借
你应该很乐意去。如果你能提到你犯了什么错误,可能会有所帮助。是的,就是这样。不幸的是,它仍然提示并出现错误)“groovy.lang.GroovyRuntimeException:未能为类创建脚本实例:class GridLayoutDemo。原因:java.lang.InstanceException:GridLayoutDemo”但首先感谢您,我想您应该添加一个默认构造函数。但这取决于你如何使用这个类。
static final String[] gapList = ["0", "10", "15", "20"];