Java 紧急情况：；错误：非静态变量不能从静态上下文引用此变量；
我有4个小时的时间完成练习，但我收到多个“无法从静态上下文引用”错误 以下是全文：Java 紧急情况：；错误：非静态变量不能从静态上下文引用此变量；,java,static,this,non-static,Java,Static,This,Non Static,我有4个小时的时间完成练习，但我收到多个“无法从静态上下文引用”错误 以下是全文： MainApp.java:281:错误：非静态变量无法从静态上下文引用此变量 list.addMouseListener（本）； ^ java:289:错误：无法从静态上下文引用非静态方法setBounds（int，int，int，int） 立根（300300350150）； ^ MainApp.java:292:错误：无法从静态上下文引用非静态方法getContentPane（） 容器cp=getConten
MainApp.java:281:错误：非静态变量无法从静态上下文引用此变量
list.addMouseListener（本）；
^
java:289:错误：无法从静态上下文引用非静态方法setBounds（int，int，int，int）
立根（300300350150）；
^
MainApp.java:292:错误：无法从静态上下文引用非静态方法getContentPane（）
容器cp=getContentPane（）；
^
java:299:错误：非静态变量无法从静态上下文引用此变量
按钮1.addActionListener（此按钮）；
^
java:326:错误：无法从静态上下文引用非静态方法包（）
包装（）；
^
java:328:错误：无法从静态上下文引用非静态方法setDefaultCloseOperation（int）
setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）；
^
java:330:错误：无法从静态上下文引用非静态方法RentShop（字符串、目录、DefaultListModel）
租赁店（“电影”、猫、列表模型）；
^
java:343:错误：非静态变量无法从静态上下文引用此变量
清单2.addMouseListener（本）；
^
java:351:错误：无法从静态上下文引用非静态方法setBounds（int，int，int，int）
立根（300300350150）；
^
java:354:错误：无法从静态上下文引用非静态方法getContentPane（）
容器cp2=getContentPane（）；
^
java:363:错误：非静态变量无法从静态上下文引用此变量
按钮2.addActionListener（此）；
^
MainApp.java:391:错误：无法从静态上下文引用非静态方法包（）
包装（）；
^
java:393:错误：无法从静态上下文引用非静态方法setDefaultCloseOperation（int）
setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）；
^
java:395:错误：无法从静态上下文引用非静态方法RentShop（String、Catalogs、DefaultListModel）
RentShop（“游戏”、cat、ListModel2）；
^
java:407:错误：非静态变量无法从静态上下文引用此变量
清单3.addMouseListener（本）；
^
java:414:错误：无法从静态上下文引用非静态方法setBounds（int，int，int，int）
立根（300300350150）；
^
java:416:错误：无法从静态上下文引用非静态方法getContentPane（）
容器cp3=getContentPane（）；
^
java:426:错误：非静态变量无法从静态上下文引用此变量
按钮3.addActionListener（此）；
^
MainApp.java:447:错误：无法从静态上下文引用非静态方法包（）
包装（）；
^
java:449:错误：无法从静态上下文引用非静态方法setDefaultCloseOperation（int）
setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）；
^
java:463:错误：无法从静态上下文引用非静态方法add（组件）
添加（选项卡窗格）；
^
注意：MainApp.java使用未经检查或不安全的操作。
注意：使用-Xlint重新编译：未选中以获取详细信息。
21错误private void run（）main（）private静态变量，而只使用private
私有静态字符串ans
变成
私有字符串
等
类似于。。。（我没有测试过这个）。注意，我也将MainPro更改为实例方法。删除了所有的静力学
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import java.awt.BorderLayout;
import javax.swing.DefaultListModel;
import javax.swing.JTabbedPane;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.JList;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.*;
public class MainApp extends JFrame implements ActionListener, MouseListener
{
private String ans;
private int ans2;
private boolean over;
private int li=-1;
private int li2=-1;
private int li3=-1;
private JFrame frame;
private JButton button1;
private JButton button2;
private JButton button3;
private JButton gfbutton;
private JButton rbutton;
private JLabel label;
private JLabel label2;
private JLabel label3;
private JTextArea area;
private JTextArea area2;
private JTextArea area3;
private JList list;
private JList list2;
private JList list3;
private DefaultListModel ListModel;
private DefaultListModel ListModel2;
private DefaultListModel ListModel3;
public static Catalogs cat = new Catalogs();
public static String Items;
public static String RentsList;
public void lists(JTextArea area, JLabel label, JList list) //For games and films
{
boolean flag=false;
int i=0;
while(i<cat.items.size() && flag==false)
{
if( cat.items.get(i).getProname().equals ( list.getSelectedValue() ) )
{
area.setText(cat.items.get(i).toString());
String pathimage = "Images/" + cat.items.get(i).getProname() + ".jpg";
label.setIcon(new ImageIcon(pathimage));
flag=true;
}
i++;
}
if(cat.items.get(i).getRentnum()>0)
cat.rentItems.add(cat.items.get(i).RentItem());
else
JOptionPane.showMessageDialog(null,"Sorry...","There are no available copies left",JOptionPane.INFORMATION_MESSAGE);
}
public void mouseClicked(MouseEvent event)
{
if (list.getSelectedIndex() != li)
{
lists(area, label, list);
}
else if (list2.getSelectedIndex() != li2)
{
lists(area2, label2, list2);
}
else if (list3.getSelectedIndex() != li3)
{
boolean flag=false;
int i=0;
while(i<cat.rentItems.size() && flag==false)
{
if( cat.rentItems.get(i).getProname().equals ( list.getSelectedValue() ) )
{
area.setText(cat.rentItems.get(i).toString());
String pathimage = "Images/" + cat.rentItems.get(i).getProname() + ".jpg";
label.setIcon(new ImageIcon(pathimage));
flag=true;
}
i++;
}
}
li = list.getSelectedIndex();
li2 = list2.getSelectedIndex();
li3 = list3.getSelectedIndex();
}
public void mouseExited(MouseEvent event){}
public void mouseEntered(MouseEvent event){}
public void mouseReleased(MouseEvent event){}
public void mousePressed(MouseEvent event){}
public void actionPerformed(ActionEvent e)
{
if (e.getSource() == button1) {
cat.items.get(list.getSelectedIndex()).RentItem();
}
else if (e.getSource() == button2) {
cat.items.get(list2.getSelectedIndex()).RentItem();
}
else if (e.getSource() == button3)
{
boolean flag=false;
int i = list3.getSelectedIndex();
if (i != -1)
{
while(i<cat.items.size() && flag==false) //Find the product in items via renting name
{
if( cat.items.get(i).getProname().equals( cat.rentItems.get(i).getProname() ) )
{
cat.items.get(i).setRentnum( cat.items.get(i).getRentnum() + 1 );
flag=true;
}
i++;
}
ListModel3.remove(i);
cat.rentItems.remove(i);
}
}
}
public void RentShop(String type, Catalogs cat, DefaultListModel ListModel) //Function for renting each product
{
for(Products product : cat.items)
{
if ( product.getType().equals(type) )
ListModel.addElement( product.getProname() );
}
}
private void run() {
//First window for importing
JFrame.setDefaultLookAndFeelDecorated(true);
JDialog.setDefaultLookAndFeelDecorated(true);
frame = new JFrame("Importing...");
frame.setLayout(new FlowLayout());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JButton gfbutton = new JButton("Select File for Games and Films");
JButton rbutton = new JButton("Select File for Rents");
gfbutton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
JFileChooser fi = new JFileChooser();
int returnValue = fi.showOpenDialog(null);
if (returnValue == fi.APPROVE_OPTION) {
Items = fi.getSelectedFile().getPath();
}
if(over==true) frame.dispose();
over = true;
}
});
rbutton.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae)
{
JFileChooser fi = new JFileChooser();
int returnValue = fi.showOpenDialog(null);
if (returnValue == fi.APPROVE_OPTION) {
RentsList = fi.getSelectedFile().getPath();
////////////////////??????????
}
if(over==true)
{
frame.dispose();
MainPro();
}
over = true;
}
});
}
//--------------------------------------------------Main program
public static void main(String args[])
{
new MainApp().run();
}
/**
* I have no idea what you're doing here but this should also not be static
*/
private void MainPro(){
frame = new JFrame("Video Club"); //?
frame.setBounds(500,300,400,500);
frame.add(gfbutton);
frame.add(rbutton);
frame.pack();
frame.setVisible(true);
L_File lf = new L_File(cat,"Items.txt", "RentsList.txt"); //Importing
lf.loadFile();
//Main window, 1st tab
JTabbedPane tabbedPane = new JTabbedPane();
JPanel panel1 = new JPanel();
tabbedPane.addTab("Movies",null,panel1,"Movies");
JList list = new JList();
list.addMouseListener(this);
panel1.add(list);
JTextArea area = new JTextArea("Details");
panel1.add(area,BorderLayout.SOUTH);
ListModel = new DefaultListModel();
setBounds(300, 300, 350, 150);
Container cp = getContentPane();
cp.setLayout(new BorderLayout());
panel1.setLayout(new FlowLayout());
button1= new JButton("Rent");
button1.addActionListener(this);
panel1.add(button1);
area.setFont(new Font("Serif", Font.ITALIC, 18));
area.setForeground(Color.BLUE);
area.setEditable(false);
cp.add(panel1, BorderLayout.LINE_START);
// A JList presents the user with a group of items (DefaultListModel)
list = new JList(ListModel);
list.setSelectedIndex(0);
// A JScrollPane provides a scrollable view of a component
JScrollPane listScroller = new JScrollPane(list);
listScroller.setPreferredSize(new Dimension(150, 100));
cp.add(listScroller, BorderLayout.CENTER);
label = new JLabel();
//label.setIcon(new ImageIcon(products.get(0).getImagePath()));
cp.add(label, BorderLayout.LINE_END);
pack();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
RentShop("Film",cat,ListModel);
//2nd tab
JPanel panel2 = new JPanel();
tabbedPane.addTab("Games",null,panel2,"Games");
JList list2 = new JList();
list2.addMouseListener(this);
panel2.add(list2,BorderLayout.SOUTH);
JTextArea area2 = new JTextArea("Details");
panel2.add(area2);
DefaultListModel ListModel2 = new DefaultListModel();
setBounds(300, 300, 350, 150);
Container cp2 = getContentPane();
cp2.setLayout(new BorderLayout());
panel2.setLayout(new FlowLayout());
button2= new JButton("Rent");
panel2.add(button2);
button2.addActionListener(this);
area2.setFont(new Font("Serif", Font.ITALIC, 18));
area2.setForeground(Color.BLUE);
area2.setEditable(false);
cp2.add(panel2, BorderLayout.LINE_START);
// A JList presents the user with a group of items (DefaultListModel)
list2 = new JList(ListModel);
list2.setSelectedIndex(0);
// A JScrollPane provides a scrollable view of a component
JScrollPane listScroller2 = new JScrollPane(list);
listScroller2.setPreferredSize(new Dimension(150, 100));
cp2.add(listScroller2, BorderLayout.CENTER);
label2 = new JLabel();
//label2.setIcon(new ImageIcon(products.get(0).getImagePath()));
cp2.add(label2, BorderLayout.LINE_END);
pack();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
RentShop("Game",cat,ListModel2);
//3rd tab
JPanel panel3 = new JPanel();
tabbedPane.addTab("Rents",null,panel3,"Rents");
JList list3 = new JList();
list3.addMouseListener(this);
panel3.add(list3,BorderLayout.SOUTH);
JTextArea area3 = new JTextArea("Details");
panel3.add(area3);
DefaultListModel ListModel3 = new DefaultListModel();
setBounds(300, 300, 350, 150);
Container cp3 = getContentPane();
cp3.setLayout(new BorderLayout());
panel3.setLayout(new FlowLayout());
button3= new JButton("Remove Rent");
panel3.add(button3);
button3.addActionListener(this);
area3.setFont(new Font("Serif", Font.ITALIC, 18));
area3.setForeground(Color.BLUE);
area3.setEditable(false);
cp3.add(panel3, BorderLayout.LINE_START);
// A JList presents the user with a group of items (DefaultListModel)
list3 = new JList(ListModel2);
list3.setSelectedIndex(0);
// A JScrollPane provides a scrollable view of a component
JScrollPane listScroller3 = new JScrollPane(list);
listScroller3.setPreferredSize(new Dimension(150, 100));
cp3.add(listScroller3, BorderLayout.CENTER);
pack();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//After designing:
for(Rents rent : cat.rentItems)
{
ListModel3.addElement( rent.getProname() );
}
JOptionPane.showMessageDialog(null,"Total Cost","The total renting cost is " + cat.CalculateTotalCost() + " drachmes",JOptionPane.PLAIN_MESSAGE);
add(tabbedPane);
}
}
导入java.awt.FlowLayout；
导入java.awt.event.ActionEvent；
导入java.awt.event.ActionListener；
导入java.io.File；
导入javax.swing.JButton；
导入javax.swing.JDialog；
导入javax.swing.JFileChooser；
导入javax.swing.JFrame；
导入java.awt.BorderLayout；
导入javax.swing.DefaultListModel；
导入javax.swing.JTabbedPane；
导入javax.swing.JLabel；
导入javax.swing.JPanel；
导入javax.swing.JButton；
导入javax.swing.JList；
导入java.awt.*；
导入javax.swing.*；
导入java.awt.event.*；
导入java.util.*；
公共类MainApp扩展JFrame实现ActionListener、MouseStener
{
私有字符串ans；
私人互联网2；
私有布尔覆盖；
private int li=-1；
私有整数li2=-1；
私有整数li3=-1；
私有JFrame；
私人按钮1；
私人按钮2；
私人按钮3；
私人按钮；
私人JButton rbutton；
私人标签；
私人JLabel标签2；
私人JLabel标签3；
私人住宅区；
私人住宅区第2区；
私人住宅区第3区；
私人名单；
私人名单2；
私人名单3；
私有默认列表模型列表模型；
私有DefaultListModel ListModel2；
私有DefaultListModel ListModel3；
公共静态目录cat=新目录（）；
公共静态字符串项；
公共静态字符串出租列表；
公共无效列表（JTextArea区域、JLabel标签、JList列表）//用于游戏和电影
{
布尔标志=假；
int i=0；
while（i0）
cat.rentItems.add（cat.items.get（i.RentItem（））；
其他的
JOptionPane.showMessageDialog（空，“对不起…”，“没有可用副本了”，JOptionPane.INFORMATION\u消息）；
}
公共void mouseClicked（MouseEvent事件）
{
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import java.awt.BorderLayout;
import javax.swing.DefaultListModel;
import javax.swing.JTabbedPane;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.JList;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.*;
public class MainApp extends JFrame implements ActionListener, MouseListener
{
private String ans;
private int ans2;
private boolean over;
private int li=-1;
private int li2=-1;
private int li3=-1;
private JFrame frame;
private JButton button1;
private JButton button2;
private JButton button3;
private JButton gfbutton;
private JButton rbutton;
private JLabel label;
private JLabel label2;
private JLabel label3;
private JTextArea area;
private JTextArea area2;
private JTextArea area3;
private JList list;
private JList list2;
private JList list3;
private DefaultListModel ListModel;
private DefaultListModel ListModel2;
private DefaultListModel ListModel3;
public static Catalogs cat = new Catalogs();
public static String Items;
public static String RentsList;
public void lists(JTextArea area, JLabel label, JList list) //For games and films
{
boolean flag=false;
int i=0;
while(i<cat.items.size() && flag==false)
{
if( cat.items.get(i).getProname().equals ( list.getSelectedValue() ) )
{
area.setText(cat.items.get(i).toString());
String pathimage = "Images/" + cat.items.get(i).getProname() + ".jpg";
label.setIcon(new ImageIcon(pathimage));
flag=true;
}
i++;
}
if(cat.items.get(i).getRentnum()>0)
cat.rentItems.add(cat.items.get(i).RentItem());
else
JOptionPane.showMessageDialog(null,"Sorry...","There are no available copies left",JOptionPane.INFORMATION_MESSAGE);
}
public void mouseClicked(MouseEvent event)
{
if (list.getSelectedIndex() != li)
{
lists(area, label, list);
}
else if (list2.getSelectedIndex() != li2)
{
lists(area2, label2, list2);
}
else if (list3.getSelectedIndex() != li3)
{
boolean flag=false;
int i=0;
while(i<cat.rentItems.size() && flag==false)
{
if( cat.rentItems.get(i).getProname().equals ( list.getSelectedValue() ) )
{
area.setText(cat.rentItems.get(i).toString());
String pathimage = "Images/" + cat.rentItems.get(i).getProname() + ".jpg";
label.setIcon(new ImageIcon(pathimage));
flag=true;
}
i++;
}
}
li = list.getSelectedIndex();
li2 = list2.getSelectedIndex();
li3 = list3.getSelectedIndex();
}
public void mouseExited(MouseEvent event){}
public void mouseEntered(MouseEvent event){}
public void mouseReleased(MouseEvent event){}
public void mousePressed(MouseEvent event){}
public void actionPerformed(ActionEvent e)
{
if (e.getSource() == button1) {
cat.items.get(list.getSelectedIndex()).RentItem();
}
else if (e.getSource() == button2) {
cat.items.get(list2.getSelectedIndex()).RentItem();
}
else if (e.getSource() == button3)
{
boolean flag=false;
int i = list3.getSelectedIndex();
if (i != -1)
{
while(i<cat.items.size() && flag==false) //Find the product in items via renting name
{
if( cat.items.get(i).getProname().equals( cat.rentItems.get(i).getProname() ) )
{
cat.items.get(i).setRentnum( cat.items.get(i).getRentnum() + 1 );
flag=true;
}
i++;
}
ListModel3.remove(i);
cat.rentItems.remove(i);
}
}
}
public void RentShop(String type, Catalogs cat, DefaultListModel ListModel) //Function for renting each product
{
for(Products product : cat.items)
{
if ( product.getType().equals(type) )
ListModel.addElement( product.getProname() );
}
}
private void run() {
//First window for importing
JFrame.setDefaultLookAndFeelDecorated(true);
JDialog.setDefaultLookAndFeelDecorated(true);
frame = new JFrame("Importing...");
frame.setLayout(new FlowLayout());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JButton gfbutton = new JButton("Select File for Games and Films");
JButton rbutton = new JButton("Select File for Rents");
gfbutton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
JFileChooser fi = new JFileChooser();
int returnValue = fi.showOpenDialog(null);
if (returnValue == fi.APPROVE_OPTION) {
Items = fi.getSelectedFile().getPath();
}
if(over==true) frame.dispose();
over = true;
}
});
rbutton.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae)
{
JFileChooser fi = new JFileChooser();
int returnValue = fi.showOpenDialog(null);
if (returnValue == fi.APPROVE_OPTION) {
RentsList = fi.getSelectedFile().getPath();
////////////////////??????????
}
if(over==true)
{
frame.dispose();
MainPro();
}
over = true;
}
});
}
//--------------------------------------------------Main program
public static void main(String args[])
{
new MainApp().run();
}
/**
* I have no idea what you're doing here but this should also not be static
*/
private void MainPro(){
frame = new JFrame("Video Club"); //?
frame.setBounds(500,300,400,500);
frame.add(gfbutton);
frame.add(rbutton);
frame.pack();
frame.setVisible(true);
L_File lf = new L_File(cat,"Items.txt", "RentsList.txt"); //Importing
lf.loadFile();
//Main window, 1st tab
JTabbedPane tabbedPane = new JTabbedPane();
JPanel panel1 = new JPanel();
tabbedPane.addTab("Movies",null,panel1,"Movies");
JList list = new JList();
list.addMouseListener(this);
panel1.add(list);
JTextArea area = new JTextArea("Details");
panel1.add(area,BorderLayout.SOUTH);
ListModel = new DefaultListModel();
setBounds(300, 300, 350, 150);
Container cp = getContentPane();
cp.setLayout(new BorderLayout());
panel1.setLayout(new FlowLayout());
button1= new JButton("Rent");
button1.addActionListener(this);
panel1.add(button1);
area.setFont(new Font("Serif", Font.ITALIC, 18));
area.setForeground(Color.BLUE);
area.setEditable(false);
cp.add(panel1, BorderLayout.LINE_START);
// A JList presents the user with a group of items (DefaultListModel)
list = new JList(ListModel);
list.setSelectedIndex(0);
// A JScrollPane provides a scrollable view of a component
JScrollPane listScroller = new JScrollPane(list);
listScroller.setPreferredSize(new Dimension(150, 100));
cp.add(listScroller, BorderLayout.CENTER);
label = new JLabel();
//label.setIcon(new ImageIcon(products.get(0).getImagePath()));
cp.add(label, BorderLayout.LINE_END);
pack();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
RentShop("Film",cat,ListModel);
//2nd tab
JPanel panel2 = new JPanel();
tabbedPane.addTab("Games",null,panel2,"Games");
JList list2 = new JList();
list2.addMouseListener(this);
panel2.add(list2,BorderLayout.SOUTH);
JTextArea area2 = new JTextArea("Details");
panel2.add(area2);
DefaultListModel ListModel2 = new DefaultListModel();
setBounds(300, 300, 350, 150);
Container cp2 = getContentPane();
cp2.setLayout(new BorderLayout());
panel2.setLayout(new FlowLayout());
button2= new JButton("Rent");
panel2.add(button2);
button2.addActionListener(this);
area2.setFont(new Font("Serif", Font.ITALIC, 18));
area2.setForeground(Color.BLUE);
area2.setEditable(false);
cp2.add(panel2, BorderLayout.LINE_START);
// A JList presents the user with a group of items (DefaultListModel)
list2 = new JList(ListModel);
list2.setSelectedIndex(0);
// A JScrollPane provides a scrollable view of a component
JScrollPane listScroller2 = new JScrollPane(list);
listScroller2.setPreferredSize(new Dimension(150, 100));
cp2.add(listScroller2, BorderLayout.CENTER);
label2 = new JLabel();
//label2.setIcon(new ImageIcon(products.get(0).getImagePath()));
cp2.add(label2, BorderLayout.LINE_END);
pack();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
RentShop("Game",cat,ListModel2);
//3rd tab
JPanel panel3 = new JPanel();
tabbedPane.addTab("Rents",null,panel3,"Rents");
JList list3 = new JList();
list3.addMouseListener(this);
panel3.add(list3,BorderLayout.SOUTH);
JTextArea area3 = new JTextArea("Details");
panel3.add(area3);
DefaultListModel ListModel3 = new DefaultListModel();
setBounds(300, 300, 350, 150);
Container cp3 = getContentPane();
cp3.setLayout(new BorderLayout());
panel3.setLayout(new FlowLayout());
button3= new JButton("Remove Rent");
panel3.add(button3);
button3.addActionListener(this);
area3.setFont(new Font("Serif", Font.ITALIC, 18));
area3.setForeground(Color.BLUE);
area3.setEditable(false);
cp3.add(panel3, BorderLayout.LINE_START);
// A JList presents the user with a group of items (DefaultListModel)
list3 = new JList(ListModel2);
list3.setSelectedIndex(0);
// A JScrollPane provides a scrollable view of a component
JScrollPane listScroller3 = new JScrollPane(list);
listScroller3.setPreferredSize(new Dimension(150, 100));
cp3.add(listScroller3, BorderLayout.CENTER);
pack();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//After designing:
for(Rents rent : cat.rentItems)
{
ListModel3.addElement( rent.getProname() );
}
JOptionPane.showMessageDialog(null,"Total Cost","The total renting cost is " + cat.CalculateTotalCost() + " drachmes",JOptionPane.PLAIN_MESSAGE);
add(tabbedPane);
}
}