如何将JSCrollpane添加到JPANEL中，并使用空布局添加

Question

项目快照

我想将JSCrollpane添加到我的面板中以添加更多内容，但是它与面板无法使用，可以解决此问题，请快点.....它没有出现在我的面板中，我尝试过很多次，但是它不起作用

import java.awt.Color;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import java.awt.Font;
import javax.swing.JTextField;
import javax.swing.border.EtchedBorder;
import javax.swing.border.LineBorder;
import javax.swing.JTextArea;
import javax.swing.JButton;
import javax.swing.JScrollPane;
import javax.swing.JRadioButton;
import javax.swing.JComboBox;
import javax.swing.DefaultComboBoxModel;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.Random;
public class JavaProject2_15 {
    private JFrame frame;
    private JTextField textField_6;
    private JTextField textField_5;
    private JTextField textField_4;
    private JTextField textField;
    private JTextField textField_1;
    private JTextField textField_2;
    private JTextField textField_3;
    private JComboBox comboBox;
    private JTextArea textArea;
    private static Connection con;
    private PreparedStatement PStat;
    private ResultSet res;
    private String Gender;
    private String Combobox;
    private String query;
    private JTextField textField_7;
    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    JavaProject2_15 window = new JavaProject2_15();
                    window.frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }
    /**
     * Create the application.
     */
    public JavaProject2_15() {
        initialize();
    }
    public void getDataJavaProject2_13()
    {
        frame.setVisible(true);
    }
    /**
     * Initialize the contents of the frame.
     */
    private void initialize() {
        frame = new JFrame();
        frame.setBounds(100, 100, 913, 700);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().setLayout(null);
        JPanel panel = new JPanel();
        panel.setBounds(10, 11, 877, 94);
        panel.setBorder(new LineBorder(Color.decode("#0080AA"), 2, true));
        panel.setBackground(Color.decode("#35485E"));
        frame.getContentPane().add(panel);
        panel.setLayout(null);
        JLabel lblNewLabel_1 = new JLabel("Customer Entry");
        lblNewLabel_1.setFont(new Font("Times New Roman", Font.BOLD, 20));
        lblNewLabel_1.setForeground(Color.WHITE);
        lblNewLabel_1.setBounds(380, 34, 179, 22);
        panel.add(lblNewLabel_1);
        JPanel panel_1 = new JPanel();
        panel_1.setBounds(10, 116, 689, 534);
        panel_1.setBorder(new LineBorder(Color.decode("#0080AA"), 2, true));
        frame.getContentPane().add(panel_1);
        panel_1.setLayout(null);
        JLabel lblNewLabel = new JLabel("Product Code :");
        lblNewLabel.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        lblNewLabel.setBounds(37, 29, 111, 14);
        panel_1.add(lblNewLabel);
        JLabel lblCustomerName = new JLabel("Product Name :");
        lblCustomerName.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        lblCustomerName.setBounds(37, 70, 111, 14);
        panel_1.add(lblCustomerName);
        JLabel lblAddress = new JLabel("Selling Price :");
        lblAddress.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        lblAddress.setBounds(37, 324, 111, 14);
        panel_1.add(lblAddress);
        JLabel lblCity = new JLabel("Cost Price :");
        lblCity.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        lblCity.setBounds(37, 284, 111, 14);
        panel_1.add(lblCity);
        JLabel lblState = new JLabel("Sub Category :");
        lblState.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        lblState.setBounds(37, 151, 111, 14);
        panel_1.add(lblState);
        JLabel lblPincode = new JLabel("Reorder Point :");
        lblPincode.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        lblPincode.setBounds(37, 364, 111, 14);
        panel_1.add(lblPincode);
        JLabel lblContactNo = new JLabel("Opening Stock :");
        lblContactNo.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        lblContactNo.setBounds(37, 401, 111, 14);
        panel_1.add(lblContactNo);
        JLabel lblEmailId = new JLabel("Discount :");
        lblEmailId.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        lblEmailId.setBounds(37, 439, 111, 14);
        panel_1.add(lblEmailId);
        JLabel lblRemarks = new JLabel("Remarks :");
        lblRemarks.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        lblRemarks.setBounds(37, 201, 111, 14);
        panel_1.add(lblRemarks);
        textField_6 = new JTextField();
        textField_6.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        textField_6.setColumns(10);
        textField_6.setBounds(135, 435, 202, 28);
        textField_6.setBorder(new LineBorder(Color.decode("#0080AA"), 2, true));
        panel_1.add(textField_6);
        textField_5 = new JTextField();
        textField_5.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        textField_5.setColumns(10);
        textField_5.setBounds(135, 396, 202, 28);
        textField_5.setBorder(new LineBorder(Color.decode("#0080AA"), 2, true));
        panel_1.add(textField_5);
        textField_4 = new JTextField();
        textField_4.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        textField_4.setColumns(10);
        textField_4.setBounds(135, 357, 202, 28);
        textField_4.setBorder(new LineBorder(Color.decode("#0080AA"), 2, true));
        panel_1.add(textField_4);
        textField = new JTextField();
        textField.setEditable(false);
        textField.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        textField.setColumns(10);
        textField.setBounds(135, 26, 202, 28);
        textField.setBorder(new LineBorder(Color.decode("#0080AA"), 2, true));
        panel_1.add(textField);
        textField_1 = new JTextField();
        textField_1.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        textField_1.setColumns(10);
        textField_1.setBounds(135, 67, 202, 28);
        textField_1.setBorder(new LineBorder(Color.decode("#0080AA"), 2, true));
        panel_1.add(textField_1);
        textField_2 = new JTextField();
        textField_2.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        textField_2.setColumns(10);
        textField_2.setBounds(135, 279, 202, 28);
        textField_2.setBorder(new LineBorder(Color.decode("#0080AA"), 2, true));
        panel_1.add(textField_2);
        textField_3 = new JTextField();
        textField_3.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        textField_3.setColumns(10);
        textField_3.setBounds(135, 318, 202, 28);
        textField_3.setBorder(new LineBorder(Color.decode("#0080AA"), 2, true));
        panel_1.add(textField_3);
        JScrollPane scrollPane = new JScrollPane();
        scrollPane.setBounds(135, 181, 363, 87);
        panel_1.add(scrollPane);
        textArea = new JTextArea();
        scrollPane.setViewportView(textArea);
        textArea.setBorder(new LineBorder(Color.decode("#0080AA"), 2, true));
        comboBox = new JComboBox();
        comboBox.setFont(new Font("Times New Roman", Font.PLAIN, 14));
        comboBox.setModel(new DefaultComboBoxModel(new String[] {"States Of India", "Andhra Pradesh ", "Arunachal Pradesh ", "Assam", "Bihar ", "Goa ", "Gujarat ", "Haryana ", "Himachal Pradesh", "Jammu & Kashmir", "Karnataka", "Kerala ", "Madhya Pradesh ", "Maharashtra ", "Manipur ", "Meghalaya ", "Mizoram ", "Nagaland ", "Orissa ", "Punjab", "Rajasthan ", "Sikkim ", "Tamil Nadu ", "Tripura ", "Uttar Pradesh ", "West Bengal ", "Chhattisgarh", "Uttarakhand ", "Jharkhand ", "Telangana "}));
        comboBox.setBounds(135, 145, 202, 25);
        comboBox.setBorder(new EtchedBorder(EtchedBorder.RAISED, Color.decode("#0080AA"), Color.decode("#0080AA")));
        panel_1.add(comboBox);
        JComboBox comboBox_1 = new JComboBox();
        comboBox_1.setFont(new Font("Times New Roman", Font.PLAIN, 14));
        comboBox_1.setBorder(new EtchedBorder(EtchedBorder.RAISED, Color.decode("#0080AA"), Color.decode("#0080AA")));
        comboBox_1.setBounds(135, 109, 202, 25);
        panel_1.add(comboBox_1);
        JLabel lblCategory = new JLabel("Category :");
        lblCategory.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        lblCategory.setBounds(37, 116, 111, 14);
        panel_1.add(lblCategory);
        textField_7 = new JTextField();
        textField_7.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        textField_7.setColumns(10);
        textField_7.setBorder(new LineBorder(Color.decode("#0080AA"), 2, true));
        textField_7.setBounds(135, 474, 202, 28);
        panel_1.add(textField_7);
        JLabel lblVat = new JLabel("VAT :");
        lblVat.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        lblVat.setBounds(37, 481, 111, 14);
        panel_1.add(lblVat);
        JPanel panel_2 = new JPanel();
        panel_2.setBounds(723, 116, 164, 356);
        panel_2.setBorder(new LineBorder(Color.decode("#0080AA"), 2, true));
        frame.getContentPane().add(panel_2);
        panel_2.setLayout(null);
        JButton btnNewButton = new JButton("New ");
        btnNewButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                Customer_ID();
                textField_1.setText("");
                textField_2.setText("");
                textField_3.setText("");
                comboBox.setSelectedIndex(0);
                textField_4.setText("");
                textField_5.setText("");
                textField_6.setText("");
                textArea.setText("");
                lblVat.setText("");
            }
        });
        btnNewButton.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        btnNewButton.setBounds(35, 27, 89, 40);
        btnNewButton.setBackground(Color.decode("#2788D7"));
        btnNewButton.setForeground(Color.BLACK);
        panel_2.add(btnNewButton);
        JButton btnSave = new JButton("Save");
        btnSave.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                Create();
            }
        });
        btnSave.setForeground(Color.BLACK);
        btnSave.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        btnSave.setBackground(new Color(39, 136, 215));
        btnSave.setBounds(35, 80, 89, 40);
        panel_2.add(btnSave);
        JButton btnUpdate = new JButton("Update");
        btnUpdate.setForeground(Color.BLACK);
        btnUpdate.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        btnUpdate.setBackground(new Color(39, 136, 215));
        btnUpdate.setBounds(35, 134, 89, 40);
        panel_2.add(btnUpdate);
        JButton btnDelete = new JButton("Delete");
        btnDelete.setForeground(Color.BLACK);
        btnDelete.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        btnDelete.setBackground(new Color(39, 136, 215));
        btnDelete.setBounds(35, 185, 89, 40);
        panel_2.add(btnDelete);
        JButton btnGetdata = new JButton("Get Data");
        btnGetdata.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                JavaProject2_14 obj=new JavaProject2_14();
                obj.getDataJavaProject2_14();
            }
        });
        btnGetdata.setForeground(Color.BLACK);
        btnGetdata.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        btnGetdata.setBackground(new Color(39, 136, 215));
        btnGetdata.setBounds(35, 236, 89, 40);
        panel_2.add(btnGetdata);
        JButton btnClose = new JButton("Close");
        btnClose.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                frame.setVisible(false);
            }
        });
        btnClose.setForeground(Color.BLACK);
        btnClose.setFont(new Font("Times New Roman", Font.PLAIN, 13));
        btnClose.setBackground(new Color(39, 136, 215));
        btnClose.setBounds(35, 287, 89, 40);
        panel_2.add(btnClose);
    }
}

Answer 1

我找到了答案，而不是使用绝对布局，而是我更喜欢使用grouplayout，因为在此过程中，我们可以将组件布局到其在jpanel中的绝对位置，我们还可以轻松地将jscrollpane添加到jpanel。