我正在做一个文本编辑器,这是我的代码的基本版本。我用UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
使整个事物看起来像我正在使用的平台,但JFileChooser save
始终是java的外观。任何人都可以帮忙吗?我可能把它在错误的地方,但我不知道在哪里JFileChooser没有按照外观和感觉
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.filechooser.FileFilter;
import javax.swing.filechooser.FileNameExtensionFilter;
@SuppressWarnings("serial")
public class TextEditor extends JPanel {
static Container pane;
static Container paneText;
static BasicFrame frame;
static JTextArea textArea;
static JScrollPane areaScrollPane;
static FileFilter txtFile;
static JFileChooser save = new FileChooser(System.getProperty("user.home//documents"));
public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException, UnsupportedLookAndFeelException, IOException {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
frame = BasicFrame.getInstance();
pane = frame.getContentPane();
paneText = new JPanel();
textArea = new JTextArea();
textArea.setLineWrap(true);
textArea.setWrapStyleWord(true);
areaScrollPane = new JScrollPane(textArea);
areaScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
areaScrollPane.setPreferredSize(new Dimension(250, 250));
int hGap = 10;
int vGap = 20;
pane.setLayout(new FlowLayout(FlowLayout.LEFT, hGap, vGap));
Action SaveAs = new SaveAs("Save File", "Writes the text file");
JButton one = new JButton(SaveAs);
one.addActionListener(null);
txtFile = new FileNameExtensionFilter("Text File (.txt)", "txt");
save.addChoosableFileFilter(txtFile);
save.setFileFilter(txtFile);
save.setAcceptAllFileFilterUsed(true);
pane.add(areaScrollPane);
pane.add(one);
pane.add(paneText);
paneText.setLayout(new BoxLayout(paneText, BoxLayout.Y_AXIS));
frame.setSize(450, 320);
frame.setVisible(true);
}
static class SaveAs extends AbstractAction {
public SaveAs(String text, String desc) {
super(text);
putValue(SHORT_DESCRIPTION, desc);
}
public void actionPerformed(ActionEvent e) {
save.setFileHidingEnabled(false);
save.setApproveButtonText("Save");
save.setSelectedFile(new File("new 1"));
int actionDialog = save.showSaveDialog(null);
if (actionDialog != JFileChooser.APPROVE_OPTION) {
return;
} else {
log("Done!", true);
}
String name = save.getSelectedFile().getAbsolutePath();
if (!name.endsWith(".txt") && save.getFileFilter() == txtFile) {
name += ".txt";
}
BufferedWriter outFile = null;
try {
outFile = new BufferedWriter(new FileWriter(name));
textArea.write(outFile);
} catch (IOException ioe) {
ioe.printStackTrace();
} finally {
if (outFile != null) {
try {
outFile.close();
} catch (IOException ioee) {
}
}
}
}
private void log(String msg, boolean remove) {
JLabel label1;
label1 = new JLabel(msg);
if (remove) {
paneText.removeAll();
}
paneText.add(label1);
paneText.validate();
pane.validate();
new Thread() {
public void run() {
try {
Thread.sleep(1000);
} catch (InterruptedException ie) {
ie.printStackTrace();
}
paneText.removeAll();
paneText.validate();
pane.validate();
}
}.start();
}
}
}
我感动了'保存=新的JFileChooser(System.getProperty( “//的user.home文件”));'出块和后添加的,并得到了摆脱块上的“静态”,因为它给了我错误,但现在我得到一个'在线程中的异常“主”java.lang.Error:未解决的编译问题:'和5'保存不能解决'然后一个'在guiWithSwing.TextEditor.main(TextEditor.java:84)' – Jeffmagma
我修正了错误,所以我可以测试代码,但它什么也没做。现在,包括按钮在内的所有东西都具有Java外观 – Jeffmagma
您需要有'static'块来设置L&F并初始化File Chooser。由于您的文件选择器是静态的,如果您没有静态块,文件选择器将在L&F设置之前初始化,而没有结果。对于你的错误:你需要有'静态JFileChooser保存'和'静态'块。看起来你也删除了声明。 – Nivas