如何在Jframe中使用java文件选择器？ [英] How to use java file chooser in Jframe?

问题描述

我在使用jframe中的文件选择器时遇到问题。我想使用文件选择器在特定位置保存文件并从特定位置打开文件。

I am facing a problem using a file chooser in a jframe. I want to save a file in a specific place using file chooser and open a file from the specific place.

推荐答案

尝试使用此代码进行关闭，打开，保存按钮：

Try using this code for your close, open, save buttons:

public void actionPerformed(ActionEvent e) {

		if(e.getSource()==close){
			this.dispose();
		}
		
		if(e.getSource()==open){
			
			JFileChooser choose=new JFileChooser();  //create a new JFileChooser instance
		
			int option=choose.showOpenDialog(this);
			if(option==JFileChooser.APPROVE_OPTION){  // ok button in dialog chose frame
				
				this.textArea.setText(" ");
				try {
					
					Scanner scan=new Scanner(new FileReader(choose.getSelectedFile().getPath()));  
				
   //you need a scanner to read lines in your text file, a stream FileReader to read the text file
					while(scan.hasNext()){
						textArea.append(scan.nextLine()+"\n");
					}
					
				} catch (FileNotFoundException e1) {
					e1.printStackTrace();
				}
				
			}
			
		}// open getSource()
		
		if(e.getSource()==save){
			
			JFileChooser save=new JFileChooser();
			int option=save.showSaveDialog(this);
			
			if(option==JFileChooser.APPROVE_OPTION){
				
				try {
					BufferedWriter bw=new BufferedWriter(new FileWriter(save.getSelectedFile().getPath()));  //a bufferedwriter( a high level stream writer )
					bw.write(textArea.getText());
					bw.close();
					
				} catch (IOException e1) {
					e1.printStackTrace();
				}
			}
			
		}
		
	}

请查看示例此处。请参阅此链接。



干杯，

Sudhakar

Please find an example here. Refer to this link as well.

Cheers,
Sudhakar

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