?? savefiledialogexample2.java
字號:
/**@author WangJinTao,MengQingChang 2006
*/
package swt.dialog;
import java.io.*;
import org.eclipse.swt.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.swt.events.*;
public class SaveFileDialogExample2 {
private Text text;
private File file;
private Shell shell;
public SaveFileDialogExample2() {
final Display display = Display.getDefault();
shell = new Shell(new Shell());
shell.setSize(383, 225);
shell.setText("FileDialog實例");
text = new Text(shell, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
text.setBounds(5, 5, 365, 150);
Button button = new Button(shell, SWT.PUSH);
button.setBounds(210, 165, 160, 20);
button.setText("保存型文件選擇對話框");
button.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
saveTextFile();
}
});
shell.open();
shell.layout();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
}
boolean saveTextFile() {
// 定義文件選擇對話框,類型為保存型
FileDialog dialog = new FileDialog(shell, SWT.SAVE);
dialog.setText("保存");
// 設置對話框保存的限定類型
dialog.setFilterExtensions(new String[] { "*.txt", "*.doc", "*.xls",
"*.*" });
// 打開對話框,返回一個保存文件的路徑
String saveFile = dialog.open();
if (saveFile == null) {
return false;
}
file = new File(saveFile);
try {
/**
* FileWriter與FileWriter類似,都是用來處理字符信息。
* 不過FileWriter用來寫文件字符流
*/
FileWriter filewriter = new FileWriter(file);
filewriter.write(text.getText());
filewriter.close();
return true;
} catch (IOException e) {
}
return false;
}
public static void main(String[] args) {
new SaveFileDialogExample2();
}
}
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