在尝试构建此项目时，我仍然收到错误class, interface, or enum expected。我已经把事情搞得一团糟，但我似乎无法找出问题所在。请问有人帮忙吗？
控制台中显示的错误是：
ant -f C:\\Users\\x\\Documents\\NetBeansProjects\\DisplayDataUsingJTable -Dnb.internal.action.name=rebuild clean jar
init:
deps-clean:
Updating property file: C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\build\built-clean.properties
Deleting directory C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\build
clean:
init:
deps-jar:
Created dir: C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\build
Updating property file: C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\build\built-jar.properties
Created dir: C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\build\classes
Created dir: C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\build\empty
Created dir: C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\build\generated-sources\ap-source-output
Compiling 3 source files to C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\build\classes
C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\src\pack1\DisplayPerson.java:245: error: class, interface, or enum expected
private void initComponents() {
C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\src\pack1\DisplayPerson.java:248: error: class, interface, or enum expected
setFocusable(false);
C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\src\pack1\DisplayPerson.java:250: error: class, interface, or enum expected
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
C:\Users\Imtiaaz\Documents\NetBeansProjects\DisplayDataUsingJTable\src\pack1\DisplayPerson.java:251: error: class, interface, or enum expected
getContentPane().setLayout(layout);
C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\src\pack1\DisplayPerson.java:252: error: class, interface, or enum expected
layout.setHorizontalGroup(
C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\src\pack1\DisplayPerson.java:256: error: class, interface, or enum expected
layout.setVerticalGroup(
C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\src\pack1\DisplayPerson.java:261: error: class, interface, or enum expected
pack();
C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\src\pack1\DisplayPerson.java:262: error: class, interface, or enum expected
}// </editor-fold>//GEN-END:initComponents
8 errors
C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\nbproject\build-impl.xml:924: The following error occurred while executing this line:
C:\Users\x\Documents\NetBeansProjects\DisplayDataUsingJTable\nbproject\build-impl.xml:264: Compile failed; see the compiler error output for details.
BUILD FAILED (total time: 0 seconds)
错误行来到这里：
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setFocusable(false);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 1535, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 755, Short.MAX_VALUE)
);
pack();
}// </editor-fold>
下面的完整代码 - 不包括sql语句：
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package pack1;
import java.awt.BorderLayout;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.Vector;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
public class DisplayPerson extends javax.swing.JFrame {
String driverName = "net.sourceforge.jtds.jdbc.Driver";
String serverName = "xxxxx";
String serverPort = "xxxx";
String database = serverName + ":" + serverPort;
String url = "jdbc:jtds:sqlserver:/" + database;
String username = "xx";
String password = "xxx";
public DisplayPerson() throws SQLException {
ArrayList columnNames = new ArrayList();
ArrayList data = new ArrayList();
try {
Class.forName(driverName);
Connection connection = DriverManager.getConnection(url, username, password);
// Create and execute an SQL statement that returns some data.
String SQL = "xxxxx";
Statement stmt = connection.createStatement();
ResultSet rs = stmt.executeQuery(SQL);
ResultSetMetaData rsmetadata = rs.getMetaData();
int columns = rsmetadata.getColumnCount();
// Get column names
for (int i = 1; i <= columns; i++) {
columnNames.add( rsmetadata.getColumnName(i) );
}
// Get row data
while (rs.next()) {
ArrayList row = new ArrayList(columns);
for (int i = 1; i <= columns; i++) {
row.add( rs.getObject(i) );
}
data.add( row );
}
}
catch (SQLException e) {
System.out.println( e.getMessage() );
}
catch (ClassNotFoundException ex) {
Logger.getLogger(DisplayPerson.class.getName()).log(Level.SEVERE, null, ex);
}
// Create Vectors and copy over elements from ArrayLists to them
// Vector is deprecated but I am using them in this example to keep
// things simple - the best practice would be to create a custom defined
// class which inherits from the AbstractTableModel class
Vector columnNamesVector = new Vector();
Vector dataVector = new Vector();
for (int i = 0; i < data.size(); i++) {
ArrayList subArray = (ArrayList)data.get(i);
Vector subVector = new Vector();
for (int j = 0; j < subArray.size(); j++) {
subVector.add(subArray.get(j));
}
dataVector.add(subVector);
}
for (int i = 0; i < columnNames.size(); i++)
columnNamesVector.add(columnNames.get(i));
// Create table with database data
JTable table;
table = new JTable(dataVector, columnNamesVector) {
public Class getColumnClass(int column) {
for (int row = 0; row < getRowCount(); row++) {
Object o = getValueAt(row, column);
if (o != null) {
return o.getClass();
}
}
return Object.class;
}
};
JScrollPane scrollPane = new JScrollPane( table );
getContentPane().add( scrollPane );
JPanel buttonPanel = new JPanel();
getContentPane().add( buttonPanel, BorderLayout.SOUTH );
}
public static void main(String args[]) throws SQLException {
DisplayPerson frame = new DisplayPerson();
frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
frame.pack();
frame.setVisible(true);
}
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setFocusable(false);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 1535, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 755, Short.MAX_VALUE)
);
pack();
}// </editor-fold>
/**
* @param args the command line arguments
*/
/* Set the Nimbus look and feel */
//<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
*/
//</editor-fold>
/* Create and display the form */
//java.awt.EventQueue.invokeLater(new Runnable() {
// Variables declaration - do not modify
// End of variables declaration
答案 0 :(得分：0)
不确定您是否观察到它，但您的initComponents（）方法不在DisplayPerson类的右大括号中。将它移到课堂内并且该特定错误消失
答案 1 :(得分：0)
我和Netbeans有同样的问题，结果是错误的关闭＆＃39;}＆＃39;}在主班的中间。通过高举开幕式找到它＆＃39; {＆＃39;在课堂声明和向下滚动，找到匹配的＆＃39;}＆＃39;那不属于。