notepadframe.java

java绘图 java awt 经典绘图的例子,对于初学awt模块的人非常有帮助.

        jMenuItemSaveAs.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItemSaveAsActionPerformed(evt);
            }
        });
        jMenuFile.add(jMenuItemSaveAs);

        jMenuItemExit.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_X, java.awt.event.InputEvent.CTRL_MASK));
        jMenuItemExit.setText("Exit");
        jMenuItemExit.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItemExitActionPerformed(evt);
            }
        });
        jMenuFile.add(jMenuItemExit);

        jMenuBarNotePad.add(jMenuFile);

        jMenuEdit.setMnemonic('E');
        jMenuEdit.setText("Edit");

        jMenuItemCopy.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_C, java.awt.event.InputEvent.CTRL_MASK));
        jMenuItemCopy.setText("Copy");
        jMenuItemCopy.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItemCopyActionPerformed(evt);
            }
        });
        jMenuEdit.add(jMenuItemCopy);

        jMenuItemPaste.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_V, java.awt.event.InputEvent.CTRL_MASK));
        jMenuItemPaste.setText("Paste");
        jMenuItemPaste.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItemPasteActionPerformed(evt);
            }
        });
        jMenuEdit.add(jMenuItemPaste);

        jMenuItemCut.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_X, java.awt.event.InputEvent.CTRL_MASK));
        jMenuItemCut.setText("Cut");
        jMenuItemCut.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItemCutActionPerformed(evt);
            }
        });
        jMenuEdit.add(jMenuItemCut);

        jMenuBarNotePad.add(jMenuEdit);

        jMenuHelp.setText("Help");

        jMenuItemAbout.setText("About");
        jMenuHelp.add(jMenuItemAbout);

        jMenuBarNotePad.add(jMenuHelp);

        setJMenuBar(jMenuBarNotePad);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jToolBar1, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 417, Short.MAX_VALUE)
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 417, Short.MAX_VALUE))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addComponent(jToolBar1, javax.swing.GroupLayout.PREFERRED_SIZE, 25, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 267, Short.MAX_VALUE)
                .addContainerGap())
        );

        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void jMenuItemOpenActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItemOpenActionPerformed
        // TODO add your handling code here:
        int status = jfc.showOpenDialog(this);
        if(status == JFileChooser.APPROVE_OPTION){
            File selectedFile = jfc.getSelectedFile();
            NotePadModel.getInstane().setCurrentFile(selectedFile);
            StringBuffer sb = getFileStringBuffer();
            jEditorPaneContent.setText(sb.toString());
        }
    }//GEN-LAST:event_jMenuItemOpenActionPerformed

    private void jMenuItemSaveActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItemSaveActionPerformed
        // TODO add your handling code here:
        File currentFile = NotePadModel.getInstane().getCurrentFile();
        saveContentToFile(currentFile);
    }//GEN-LAST:event_jMenuItemSaveActionPerformed

    private void jMenuItemCopyActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItemCopyActionPerformed
        // TODO add your handling code here:
        jEditorPaneContent.copy();
    }//GEN-LAST:event_jMenuItemCopyActionPerformed

    private void jMenuItemPasteActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItemPasteActionPerformed
        // TODO add your handling code here:
        jEditorPaneContent.paste();
    }//GEN-LAST:event_jMenuItemPasteActionPerformed

    private void jMenuItemCutActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItemCutActionPerformed
        // TODO add your handling code here:
        jEditorPaneContent.cut();
    }//GEN-LAST:event_jMenuItemCutActionPerformed

    private void jMenuItemExitActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItemExitActionPerformed
        // TODO add your handling code here:
        System.exit(0);
    }//GEN-LAST:event_jMenuItemExitActionPerformed

    private void jMenuItemSaveAsActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItemSaveAsActionPerformed
        // TODO add your handling code here:
        int status = jfc.showSaveDialog(this);
        if(status == JFileChooser.APPROVE_OPTION){
           File currentFile = jfc.getSelectedFile();
           saveContentToFile(currentFile);
        }
    }//GEN-LAST:event_jMenuItemSaveAsActionPerformed

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
        // TODO add your handling code here:
        jMenuItemOpen.doClick();
    }//GEN-LAST:event_jButton1ActionPerformed

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed
        // TODO add your handling code here:
        jMenuItemSave.doClick();
    }//GEN-LAST:event_jButton2ActionPerformed

    private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton3ActionPerformed
        // TODO add your handling code here:
        jMenuItemSaveAs.doClick();
    }//GEN-LAST:event_jButton3ActionPerformed

    private void jEditorPaneContentMousePressed(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jEditorPaneContentMousePressed
        // TODO add your handling code here:
        if(evt.getButton() == MouseEvent.BUTTON3){
            jPopupMenu.show(this.jEditorPaneContent, evt.getX(),evt.getY());
        }
    }//GEN-LAST:event_jEditorPaneContentMousePressed
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new NotePadFrame().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JEditorPane jEditorPaneContent;
    private javax.swing.JMenuBar jMenuBarNotePad;
    private javax.swing.JMenu jMenuEdit;
    private javax.swing.JMenu jMenuFile;
    private javax.swing.JMenu jMenuHelp;
    private javax.swing.JMenuItem jMenuItemAbout;
    private javax.swing.JMenuItem jMenuItemCopy;
    private javax.swing.JMenuItem jMenuItemCut;
    private javax.swing.JMenuItem jMenuItemExit;
    private javax.swing.JMenuItem jMenuItemOpen;
    private javax.swing.JMenuItem jMenuItemPaste;
    private javax.swing.JMenuItem jMenuItemSave;
    private javax.swing.JMenuItem jMenuItemSaveAs;
    private javax.swing.JPopupMenu jPopupMenu;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JToolBar.Separator jSeparator1;
    private javax.swing.JToolBar jToolBar1;
    // End of variables declaration//GEN-END:variables
    
}