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我有这个库存系统的应用程序，应该在其他窗口上工作，但无法导致我坚持这个相当简单的问题。Java GUI，setVisible不工作，显示空白帧
当它应该显示我制作的另一个课程时，按钮添加项目和库存转移显示空白窗口。
public class InventoryMainUI extends javax.swing.JPanel implements ActionListener {
private boolean DEBUG = false;
private JTable table;
private JTextField searchitem;
private TableRowSorter<TableModel> sorter;
private JTextField jTextField1;
public JButton STbutton;
protected JButton b1, b2, b3;
public InventoryMainUI() {
super();
setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
//Create a table with a sorter.
TableModel model = new TableModel();
sorter = new TableRowSorter<TableModel>(model);
table = new JTable(model);
table.setRowSorter(sorter);
table.setPreferredScrollableViewportSize(new Dimension(500, 250));
table.setFillsViewportHeight(true);
//For the purposes of this example, better to have a single
//selection.
table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
//When selection changes, provide user with row numbers for
//both view and model.
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
//Add the scroll pane to this panel.
add(scrollPane);
//Create a separate form for searchitem and jTextField1
JPanel mainpanel = new JPanel();
JLabel srch = new JLabel("Search Item (case sensitive):");
mainpanel.add(srch);
searchitem = new JTextField();
searchitem.setColumns(40);
//Whenever searchitem changes, invoke newFilter.
searchitem.getDocument().addDocumentListener(
new DocumentListener() {
public void changedUpdate(DocumentEvent e) {
newFilter();
}
public void insertUpdate(DocumentEvent e) {
newFilter();
}
public void removeUpdate(DocumentEvent e) {
newFilter();
}
});
srch.setLabelFor(searchitem);
mainpanel.add(searchitem);
jTextField1 = new JTextField();
mainpanel.add(jTextField1);
jTextField1.setVisible(false);
JButton aditem = new JButton("Add Item");
mainpanel.add(aditem);
aditem.addActionListener(this);
JButton STransfer = new JButton("Stock Transfer");
mainpanel.add(STransfer);
STransfer.addActionListener(this);
add(mainpanel);
}
public void actionPerformed(ActionEvent e){
AddItemUI aditemui = new AddItemUI();
aditemui.setVisible(true);
aditemui.setSize(500,400);
}
public void ActionPerformed(java.awt.event.ActionEvent evt)
{
new StockTransfer().setVisible(true);
//StockTransfer().setSize(550,650);
}
/**
* Update the row filter regular expression from the expression in
* the text box.
*/
private void newFilter() {
RowFilter<TableModel, Object> rf = null;
//If current expression doesn't parse, don't update.
try {
rf = RowFilter.regexFilter(searchitem.getText(), 0);
} catch (java.util.regex.PatternSyntaxException e) {
return;
}
sorter.setRowFilter(rf);
}
class TableModel extends AbstractTableModel {
//,"Perishable","Quantity"
private String[] columnName = {"Item","PIN","Delivered","Obtained","Expiry"};
private Object[][] data = {
{"AMD Ryzen 3 1300x", "2027",
"7/12/17", new Integer(5), new Boolean(false)},
{"Intel i7-6700K 8M Skylake", "4531",
"7/12/17", new Integer(3), new Boolean(true)},
{"Razer Blackwidow Chroma v2", "6742",
"7/18/17", new Integer(2), new Boolean(false)},
{" Nvidia GTX Titan Black", "9441",
"7/13/17", new Integer(20), new Boolean(true)},
{"CORSAIR Hydro Series H60", "1134",
"7/13/17", new Integer(10), new Boolean(false)}
};
public int getColumnCount() {
return columnName.length;
}
public int getRowCount() {
return data.length;
}
public String getColumnName(int clmns) {
return columnName[clmns];
}
public Object getValueAt(int rows, int clmns) {
return data[rows][clmns];
}
/*
* JTable uses this method to determine the default renderer/
* editor for each cell. If we didn't implement this method,
* then the last column would contain text ("true"/"false"),
* rather than a check box.
*/
public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
}
/*
* Don't need to implement this method unless your table's
* editable.
*/
public boolean isCellEditable(int row, int col) {
//Note that the data/cell address is constant,
//no matter where the cell appears onscreen.
if (col < 2) {
return false;
} else {
return true;
}
}
/*
* Don't need to implement this method unless your table's
* data can change.
*/
public void setValueAt(Object value, int row, int col) {
if (DEBUG) {
System.out.println("Setting value at " + row + "," + col
+ " to " + value
+ " (an instance of "
+ value.getClass() + ")");
}
data[row][col] = value;
fireTableCellUpdated(row, col);
if (DEBUG) {
System.out.println("New value of data:");
printDebugData();
}
}
private void printDebugData() {
int numRows = getRowCount();
int numCols = getColumnCount();
for (int i=0; i < numRows; i++) {
System.out.print(" row " + i + ":");
for (int j=0; j < numCols; j++) {
System.out.print(" " + data[i][j]);
}
System.out.println();
}
System.out.println("--------------------------");
}
}
/**
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
*/
private static void createAndShowGUI() {
//Create and set up the window.
JFrame frame = new JFrame("Inventory");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
InventoryMainUI newContentPane = new InventoryMainUI();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);
//Display the window.
frame.setSize(800,500);
frame.setVisible(true);
}
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(InventoryMainUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(InventoryMainUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(InventoryMainUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(InventoryMainUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
我一直在试图找到解决方案，请帮助，它的即将到期，任何帮助将不胜感激。
*“..它即将到期..”*然后你应该更好地计划你的时间，而不是在这里提到。我即将帮助具有更好时间管理技能的人员。 –