问题：
Swing GUI with IntelliJ error“contentPane不能设置为null。”从终端编译时
柯昱
当我从IntelliJ编译我的项目时，没有任何问题，我的程序运行顺利，但是当我尝试使用javac从终端编译它时，警告“注意：Victor/演示文稿/TableControlllerMenu.java使用未经检查或不安全的操作。”弹出，当我尝试执行它时，我得到错误“线程中的异常”main“java.awt.IllegalComponentStateException： contentPane不能设置为null。”。我猜IntelliJ没有在文件中编写对象contentPane的初始化代码，这导致javac抓狂。我尝试更改选项File-
这是GUI的代码，如果需要更多代码，请告诉我：
package Victor.presentation;
import Victor.domain.TCPresPersInterface;
import Victor.persistence.TCRow;
import Victor.persistence.TCUtilities;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Arrays;
public class TableControllerMenu extends JFrame {
static private TCPresPersInterface persInterface;
private DefaultTableModel newModel;
private JTableHeader newHeader;
private JPanel mainPanel;
private JButton rowEditorButton;
private JButton columnCastingButton;
private JButton manageTablesButton;
private JButton columnEditorButton;
private JButton basicUtilitiesButton;
private JButton fileHandlerButton;
private JButton goBackButton;
private JPanel ManageTablesPanel;
private JPanel BasicUtilitiesPanel;
private JPanel RowEditorPanel;
private JPanel ColumnEditorPanel;
private JPanel ColumnCastingPanel;
private JPanel FileHandlerPanel;
private JButton duplicateCurrentTableButton;
private JButton renameCurrentTableButton;
private JTextField duplicateTableNameField;
private JTextField renameTableField;
private JButton renameColumnButton;
private JButton modifyItemButton;
private JButton clearTableButton;
private JTextField newColumnNameField;
private JTextField newItemField;
private JTextField selectedColumnRenameField;
private JTextField newItemColumnField;
private JTextField newItemRowField;
private JCheckBox clearTableConfirmationBox;
private JButton addEmptyRowButton;
private JButton duplicateRowButton;
private JButton deleteRowButton;
private JTextField emptyRowField;
private JTextField rowDuplicateField;
private JTextField positionDuplicatedField;
private JTextField rowDeleteFIeld;
private JButton addEmptyColumnButton;
private JButton duplicateColumnButton;
private JButton moveColumnButton;
private JButton negateBinaryColumnButton;
private JButton deleteColumnButton;
private JTextField addEmptyColPosFIeld;
private JTextField duplicateColColFIeld;
private JTextField duplicatedColPosField;
private JTextField moveColColFIeld;
private JTextField moveColPosFIeld;
private JTextField negateColColField;
private JTextField deleteColColField;
private JButton columnToNumericalButton;
private JButton columnToBinaryButton;
private JButton columnToBinaryByButton;
private JButton columnToCategoricalButton;
private JTextField colNumericalColField;
private JTextField colBinaryColField;
private JComboBox colBinItemsBox;
private JTextField colBinIntervalDivField;
private JComboBox colBinaryIntervalLowerBox;
private JComboBox colBinEqualBox;
private JTextField colCategoricalField;
private JComboBox selItemsValBox;
private JTextField colBinIntervalColField;
private JButton importCSVButton;
private JButton exportCSVButton;
private JTextField importPathField;
private JTextField pathExportField;
private JTextField separatorImportField;
private JComboBox headerImportField;
private JComboBox dataTypeImportBox;
private JTextField separatorExportField;
private JComboBox headerExportField;
private JComboBox dataTypeExportField;
private JTabbedPane currentMenuTab;
private JPanel currentMenuPane;
private JTabbedPane tabbedPane1;
private JPanel currentTablePanel;
private JTable currentTable;
private JComboBox newColumnDType;
private JLabel manageTablesErrorLog;
private JLabel currentTableText;
private JLabel tableSizeText;
private JLabel errorLogText;
private JLabel tableHeaderText;
private JLabel tableTypesText;
private JTextField separatorColBinFIeld;
private JTextField itemsColBinFIeld;
private JButton deleteItemBoxButton;
private TableControllerMenu(String appName) {
super(appName);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setContentPane(mainPanel);
this.pack();
persInterface = TCPresPersInterface.getInstance();
actualize(true);
// DUPLICATE CURRENT TABLE BUTTON
duplicateCurrentTableButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String newName = duplicateTableNameField.getText();
String error = persInterface.duplicateTable(newName);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
duplicateTableNameField.setText("");
}
}
});
// RENAME CURRENT TABLE BUTTON
renameCurrentTableButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String newName = renameTableField.getText();
String error = persInterface.renameTable(newName);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(false);
renameTableField.setText("");
}
}
});
// IMPORT TABLE FROM FILE BUTTON
importCSVButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String path = importPathField.getText();
String separator = separatorImportField.getText();
String header = (String) headerImportField.getSelectedItem();
String type = (String) dataTypeImportBox.getSelectedItem();
String error = persInterface.fileHandling(false, path, separator, header, type);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(true);
importPathField.setText("");
separatorImportField.setText("");
headerImportField.setSelectedIndex(0);
dataTypeImportBox.setSelectedIndex(0);
}
}
});
// EXPORT TABLE TO FIELD BUTTON
exportCSVButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String path = pathExportField.getText();
String separator = separatorExportField.getText();
String header = (String) headerExportField.getSelectedItem();
String type = (String) dataTypeExportField.getSelectedItem();
String error = persInterface.fileHandling(true, path, separator, header, type);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(false);
pathExportField.setText("");
separatorExportField.setText("");
headerExportField.setSelectedIndex(0);
dataTypeExportField.setSelectedIndex(0);
}
}
});
// RENAME COLUMN BUTTON
renameColumnButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String newName = newColumnNameField.getText();
String col = selectedColumnRenameField.getText();
String error = persInterface.renameColumn(newName, col);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(true);
newColumnNameField.setText("");
selectedColumnRenameField.setText("");
}
}
});
// MODIFY ITEM BUTTON
modifyItemButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String value = newItemField.getText();
String row = newItemRowField.getText();
String col = newItemColumnField.getText();
String error = persInterface.modifyItem(value, row, col);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(true);
newItemField.setText("");
newItemRowField.setText("");
newItemColumnField.setText("");
}
}
});
// CLEAR TABLE BUTTON
clearTableButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
if (clearTableConfirmationBox.isSelected()) {
String error = persInterface.clearTable();
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(true);
clearTableConfirmationBox.setSelected(false);
}
} else
errorLogText.setText("ERROR: the 'are you sure' box must be marked in order to clear the table");
}
});
// ADD EMPTY ROW BUTTON
addEmptyRowButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String position = emptyRowField.getText();
String error = persInterface.addEmptyRow(position);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(true);
emptyRowField.setText("");
}
}
});
// DUPLICATE ROW BUTTON
duplicateRowButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String row = rowDuplicateField.getText();
String pos = positionDuplicatedField.getText();
String error = persInterface.duplicateRow(row, pos);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(true);
rowDuplicateField.setText("");
positionDuplicatedField.setText("");
}
}
});
// DELETE ROW BUTTON
deleteRowButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String row = rowDeleteFIeld.getText();
String error = persInterface.deleteRow(row);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(true);
rowDeleteFIeld.setText("");
}
}
});
// ADD EMPTY COLUMN BUTTON
addEmptyColumnButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String pos = addEmptyColPosFIeld.getText();
String dtype = (String) newColumnDType.getSelectedItem();
String error = persInterface.addEmptyColumn(pos, dtype);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(true);
addEmptyColPosFIeld.setText("");
newColumnDType.setSelectedIndex(0);
}
}
});
// DUPLICATE COLUMN BUTTON
duplicateColumnButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String col = duplicateColColFIeld.getText();
String pos = duplicatedColPosField.getText();
String error = persInterface.duplicateCol(col, pos);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(true);
duplicateColColFIeld.setText("");
duplicatedColPosField.setText("");
}
}
});
// MOVE COLUMN BUTTON
moveColumnButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String col = moveColColFIeld.getText();
String pos = moveColPosFIeld.getText();
String error = persInterface.moveCol(col, pos);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(true);
moveColColFIeld.setText("");
moveColPosFIeld.setText("");
}
}
});
// NEGATE BINARY COLUMN BUTTON
negateBinaryColumnButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String col = negateColColField.getText();
String error = persInterface.negateBinaryCol(col);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(true);
negateColColField.setText("");
}
}
});
// DELETE COLUMN BUTTON
deleteColumnButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String col = deleteColColField.getText();
String error = persInterface.deleteCol(col);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(true);
deleteColColField.setText("");
}
}
});
// COLUMN TO NUMERICAL BUTTON
columnToNumericalButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String col = colNumericalColField.getText();
String error = persInterface.colToNumeric(col);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(true);
colNumericalColField.setText("");
}
}
});
// COLUMN TO BINARY BUTTON
columnToBinaryButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String items = itemsColBinFIeld.getText();
String separator = separatorColBinFIeld.getText();
String castTo = (String) selItemsValBox.getSelectedItem();
String col = colBinaryColField.getText();
String error = persInterface.colToBinary(col, items, separator, castTo);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(true);
selItemsValBox.setSelectedIndex(0);
colBinaryColField.setText("");
itemsColBinFIeld.setText("");
separatorColBinFIeld.setText("");
}
}
});
// COL TO BINARY INTERVAL
columnToBinaryByButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String div = colBinIntervalDivField.getText();
String lower = (String) colBinaryIntervalLowerBox.getSelectedItem();
String equal = (String) colBinEqualBox.getSelectedItem();
String col = colBinIntervalColField.getText();
String error = persInterface.colToBinaryInterval(col, div, lower, equal);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(true);
colBinIntervalDivField.setText("");
colBinaryIntervalLowerBox.setSelectedIndex(0);
colBinEqualBox.setSelectedIndex(0);
colBinIntervalColField.setText("");
}
}
});
// COLUMN TO CATEGORICAL BUTTON
columnToCategoricalButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent actionEvent) {
String col = colCategoricalField.getText();
String error = persInterface.colToCategory(col);
if (!error.equals(""))
errorLogText.setText("ERROR: " + error);
else {
errorLogText.setText("");
actualize(true);
colCategoricalField.setText("");
}
}
});
}
private void actualize(Boolean reloadTable) {
String current = persInterface.getCurrentTable();
currentTableText.setText("Current table: " + current);
tableSizeText.setText("Size: " + persInterface.getSizeText());
errorLogText.setText("");
if (reloadTable) {
try {
//TCUtilities.print(current);
int n_cols = TCUtilities.getNCols(current);
int n_rows = TCUtilities.getNRows(current);
String header_string = Arrays.toString(TCUtilities.getHeader(current).toArray());
header_string = header_string.replace("[", "");
header_string = header_string.replace("]", "");
String type_string = "";
for (int i = 0; i < n_cols; i++) {
if (i != 0) type_string += ", ";
type_string += TCUtilities.getColType(current, i).toString();
}
tableHeaderText.setText("Header: " + header_string);
tableTypesText.setText("Column types: " + type_string);
newModel = new DefaultTableModel(n_cols, n_rows + 2);
for (int i = 0; i < TCUtilities.getNRows(current); i++) {
newModel.insertRow(i, (Object[]) TCRow.getRow(current, i).toArray(new Object[n_cols]));
}
currentTable.setModel(newModel);
newHeader = new JTableHeader();
} catch (Exception e) {
System.out.println("ERROR IN ACTUALIZE: " + e.getMessage());
}
}
}
public static String execute(String currentTable) {
TCPresPersInterface.setCurrentTable(currentTable);
JFrame frame = new TableControllerMenu("Table Managing and Editing");
frame.setVisible(true);
return TCPresPersInterface.getCurrentTable();
}
public static void setCurrentTable(String currentTable) {
persInterface.setCurrentTable(currentTable);
}
public static Boolean hasCurrentTable() {
return persInterface.hasCurrentTable();
}
}
共有1个答案
辛弘壮
我终于解决了。我做的是：文件-
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