用Java语言实现简单的图书管理系统

package integrated.bms.frame; import integrated.bms.bean.Book; import integrated.bms.bean.Journal; import integrated.bms.bean.Library; import integrated.bms.bean.Paper; import integrated.bms.bean.Reading; import integrated.bms.servive.ReadingServce; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import java.util.ListIterator; import javax.swing.JButton; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JTextField; public class ModifyJournalPanel extends JPanel { JLabel lab_name; JTextField text_name; JLabel lab_organization; JTextField text_organization; JLabel lab_journalType; JTextField text_journalType; JButton btn_up; JButton btn_down; JButton btn_save; JButton btn_reset; List<Journal> journalList; ListIterator<Journal> listIterator; int id; public ModifyJournalPanel(){ this.setSize(600, 300); lab_name = new JLabel("期刊名称:"); text_name = new JTextField(35); lab_organization = new JLabel("主管部门:"); text_organization = new JTextField(35); lab_journalType = new JLabel("期刊类型:"); text_journalType = new JTextField(35); btn_up = new JButton("上一个"); btn_up.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent arg0) { previousJournal(); } }); btn_down = new JButton("下一个"); btn_down.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent arg0) { nextJournal(); } }); btn_save= new JButton("保存"); btn_save.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent arg0) { saveJournal(); } }); btn_reset = new JButton("重置"); btn_reset.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent arg0) { resetJournal(); } }); this.add(lab_name); this.add(text_name); this.add(lab_organization); this.add(text_organization); this.add(lab_journalType); this.add(text_journalType); this.add(btn_up); this.add(btn_down); this.add(btn_save); this.add(btn_reset); initJournalList(); } private void initJournalList(){ journalList = new ArrayList<Journal>(); Iterator<Reading> iterator = Library.list.iterator(); while(iterator.hasNext()){ Reading reading = iterator.next(); if(reading.getType() == 3){ journalList.add((Journal)reading); } } listIterator = journalList.listIterator(); if(listIterator.hasNext()){ Journal journal = listIterator.next(); text_name.setText(journal.getName()); text_organization.setText(journal.getOrganization()); text_journalType.setText(journal.getJournalType()); id = journal.getId(); } } private void previousJournal(){ if(listIterator.hasPrevious()){ Journal journal = listIterator.previous(); text_name.setText(journal.getName()); text_organization.setText(journal.getOrganization()); text_journalType.setText(journal.getJournalType()); id = journal.getId(); } } private void nextJournal(){ if(listIterator.hasNext()){ Journal journal = listIterator.next(); text_name.setText(journal.getName()); text_organization.setText(journal.getOrganization()); text_journalType.setText(journal.getJournalType()); id = journal.getId(); } } private void saveJournal(){ if(id < 0){ return; } listIterator.remove(); Iterator<Reading> it = Library.list.iterator(); while(it.hasNext()){ Journal journal = (Journal)it.next(); if(journal.getId() == id){ journal.setName(text_name.getText()); journal.setOrganization(text_organization.getText()); journal.setJournalType(text_journalType.getText()); } } } private void resetJournal(){ Journal journal = null; while(listIterator.hasPrevious()){ journal = listIterator.previous(); } if(journal == null){ text_name.setText(""); text_organization.setText(""); text_journalType.setText(""); }else{ text_name.setText(journal.getName()); text_organization.setText(journal.getOrganization()); text_journalType.setText(journal.getJournalType()); } } }