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我在尝试为此 JButton 编写 if else 语句时遇到了麻烦。我试图让这个 Jbutton 调用
我正在使用 Eclipse 的计算方法，这是 Java

import java.awt.EventQueue;

import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.text.JTextComponent;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.io.File;

public class DirectorySize {

protected static final JTextComponent filelist = null;
private JFrame frame;
private JTextField textField;
private JTextField sizeOutput;
protected File file;
protected Object path;
protected long size;
protected Object getContenPane;
protected Object directory;
private int totalFolder;
private int totalFile;



/**
 * Launch the application.
 */
public static void main(String[] args) {
    EventQueue.invokeLater(new Runnable() {
        public void run() {
            try {
                DirectorySize window = new DirectorySize();
                window.frame.setVisible(true);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });
}

/**
 */
public DirectorySize() {
    initialize();
}

/**
 */
private void initialize() {
    frame = new JFrame();
    frame.setBounds(100, 100, 553, 144);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.getContentPane().setLayout(null);

    textField = new JTextField();
    textField.setBounds(10, 11, 402, 35);
    frame.getContentPane().add(textField);
    textField.setColumns(10);

    //JFileChooser to open directory
    JButton directoryButton = new JButton("Directory");
    directoryButton.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {

            JFileChooser chooser = new JFileChooser();
            chooser.setFileHidingEnabled(true);
            chooser.setMultiSelectionEnabled(false);
            chooser.setFileSelectionMode    
                           (JFileChooser.DIRECTORIES_ONLY);
            chooser.setDialogType(JFileChooser.OPEN_DIALOG);
            int state = chooser.showOpenDialog(frame);
            if (state == JFileChooser.APPROVE_OPTION )

    textField.setText(chooser.getSelectedFile().getAbsolutePath());

        }
    });
    directoryButton.setBounds(422, 17, 105, 23);
    frame.getContentPane().add(directoryButton);

    //Jbutton to calculate directory size when pressed
    JButton sizeReader = new JButton("Calculate Size");
    sizeReader.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent arg0) {

            String sizeReader = sizeOutput.getText();
            String fs = "foldersize";
                if(fs == sizeReader){

                }else{


            //sizeOutput.setText(sizeOutput.getText() + totalFolder);
                }
        }
    });
    sizeReader.setBounds(10, 57, 131, 38);
    frame.getContentPane().add(sizeReader);

    sizeOutput = new JTextField();
    sizeOutput.setEditable(false);
    sizeOutput.setBounds(151, 57, 261, 38);
    frame.getContentPane().add(sizeOutput);
    sizeOutput.setColumns(10);

    // exit button for frame
    JButton btnNewButton_2 = new JButton("Exit");
    btnNewButton_2.addActionListener(new ActionListener() {
        private Object exitButton;
        public void actionPerformed(ActionEvent arg0) {

            System.exit(0);

            this.add(exitButton);
        }

        private void add(Object exitButton2) {

        }
    });
    btnNewButton_2.setBounds(422, 65, 105, 23);
    frame.getContentPane().add(btnNewButton_2);

}

  //Calculation method for the directories
  public long getFileSize(File folder) { 
    totalFolder++;  
    System.out.println("Folder: " + folder.getName()); 
    long foldersize = 0; 

    File[] filelist = folder.listFiles(); 
    for (int i = 0; i < filelist.length; i++) { 
        if (filelist[i].isDirectory()) { 
            foldersize += getFileSize(filelist[i]); 
        } else { 
            totalFile++; 
            foldersize += filelist[i].length(); 
        } 
    } 
    return foldersize; 
} 
public int getTotalFolder() { 
    return totalFolder; 
} 
public int getTotalFile() { 
    return totalFile; 
} 
   }

有人可以帮助我并告诉我我做错了什么或我需要做什么谢谢你的帮助

4

1 回答 1

1

尝试以下操作：

String SizeReader = SizeOutput.getText().toLowerCase();
if(fs.toLowerCase().equals(SizeReader))
{

}
else
{

}
于 2012-06-12T04:14:33.720 回答