应该是类似下面的代码:
JFileChooser chooser = new JFileChooser();
int returnVal = chooser.showOpenDialog(null); //replace null with your swing container
File file;
if(returnVal == JFileChooser.APPROVE_OPTION)
file = chooser.getSelectedFile();
}
JTextArea text = new JTextArea();
BufferedReader in = new BufferedReader(new FileReader(file));
String line = in.readLine();
while(line != null){
text.append(line + "\n");
line = in.readLine();
}
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