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POCompiling Errors while creating a GUI in Java
 

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  1. POCompiling Errors while creating a GUI in Java
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    <p>My program opens a file, allows you to view or edit it, then save it again. So far, I only have the GUI layout.</p> <p>So, when I try to compile my program, I get the following errors:</p> <pre><code> FileChooser.java:26: error: &lt;identifier&gt; expected fileChooser = newJFileChooser(); </code></pre> <p>I get that^^^ error four times, once for each component I initialized. </p> <pre><code> FileChooser.java:39: error: invalid method declaration; return type required public FileChooserGUI() { </code></pre> <p>I get this^^^ error when I try to create my constructor.</p> <pre><code>import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.filechooser.*; public class FileChooser extends JFrame { //JFrame is a container class in Swing //declare all components and other variables private JTextArea textArea; //b private JButton openFileButton; //c private JButton saveFileButton; private JButton clearButton; //Declare and initialize a JFileChooser object using JFileChooser's //default constructor. private JFileChooser fileChooser; fileChooser = newJFileChooser(); //Declare and initialize a FileNameExtensionFilter object for .txt files. private FileFilter fileFilter; fileFilter = new FileNameExtensionFilter("text file", "txt"); //Set the JFileChooser object's current file filter by calling it's //setFileFilter method and passing it the filter you created in e. fileChooser.setFileFilter(fileFilter); //constructor - initialize all components, add them to the container, //create listener objects, register them to listen for events public JFileChooserLabGUI() { //call superclass constructor super("File Chooser"); //initialize all components textArea = new JTextArea(); openFileButton = new JButton("Open"); saveFileButton = new JButton("Save"); clearButton = new JButton("Clear"); //create and register the listener object with //sources of events (the JButtons in this example) listener = new JFileChooserListener(); openFileButton.addActionListener(listener); saveFileButton.addActionListener(listener); clearButton.addActionListener(listener); //arrange components in the window //Create a layout manager object and set this window's //layout manager to it textPanel = new JPanel(); textPanel.setLayout(new GridLayout(1,2)); textPanel.add(textArea); buttonPanel = new JPanel(); buttonPanel.setLayout(new GridLayout(1,3,15,0)); buttonPanel.add(openFileButton); buttonPanel.add(saveFileButton); buttonPanel.add(clearButton); this.setLayout(new GridLayout(3,1)); //Add components to the container this.add(textPanel); this.add(buttonPanel); }//end of constructor }//end of class </code></pre> <p>I don't have the listener class finished yet, but I wouldn't think that had anything to do with just displaying the GUI to make sure I have the layout correct?</p> <p>I've noticed when I declare and initialize in the same line I don't get those four errors. Am I initializing something wrong?</p>
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    1. USuser1368970
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    1. CO`fileChooser = newJFileChooser();` should be `fileChooser = new JFileChooser();`
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      1. POCompiling Errors while creating a GUI in Java
      1. USAndrew Thompson
    2. COI Changed that but did not fix the identfier expected errors?
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      1. POCompiling Errors while creating a GUI in Java
      1. USuser1368970
    3. CO........Did it?
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      1. POCompiling Errors while creating a GUI in Java
      1. USAndrew Thompson
 

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