一切正常，直到我按下任何按钮时弹出错误。我正在按照教程进行操作，按照指定进行操作， 我不明白什么是错的。
“线程中的异常”AWT-EventQueue-0“ java.lang.ArrayIndexOutOfBoundsException：1“
这就是代码。
public class Med implements Comparable<Med>{
private String nume, comp, ind, cind, mod, pret;
public Med(String nume, String comp, String ind, String cind, String mod, String pret) {
this.nume = nume;
this.comp = comp;
this.ind = ind;
this.cind = cind;
this.mod = mod;
this.pret = pret;
}
public String getNume(){ return nume; }
public String toString(){return nume+"_"+nume+"_"+comp+"_"+ind+"_"+pret; }
public int compareTo(Med o){ return (nume).compareTo(o.getNume()); }
}
import java.util.*;import java.io.*;
import javax.swing.*;
public class Farmacie{
private TreeSet<Med> ts;
private BufferedReader br;
private PrintWriter pw;
private String l;
private Med med;
private static Farmacie instanta;
private Farmacie(){
File f=new File("X:\\med.txt");
ts=new TreeSet<Med>();
String[] s, s1;
String ae;
if (f.exists()){
try{
br=new BufferedReader(new FileReader(f));
while ((l=br.readLine())!=null){
s=l.split("_");
s1=s[0].split(" ");
med=new Med(s1[0], s1[1], s[1], s[2], s[3], s[4]);
ts.add(med);
}
}catch(IOException ioe){ioe.printStackTrace();}
} else System.out.println("Fisierul nu exista");
}
public String getMed(){
String rez="";
Iterator<Med> it=ts.iterator();
while (it.hasNext()) rez+=it.next()+"\n";
return rez;
}
public void adaugaMed(String nume, String comp, String ind, String cind, String mod, String pret){
med=new Med(nume, comp, ind, cind, mod, pret);
if (ts.contains(med)) {
JOptionPane.showMessageDialog(null, "Fisa electronica exista deja in agenda telefonica", "Alert",
JOptionPane.ERROR_MESSAGE);
return;
}
ts.add(med);
JOptionPane.showMessageDialog(null, "A fost adaugata o noua fisa electronica", "Information",
JOptionPane.INFORMATION_MESSAGE);
}
public String cautaMed(String nume){
for(Med f: ts) if(nume.equals(f.getNume())) return f.toString();
return "nu exista nicio fisa cu numele "+ nume;
}
public void stergeMed(String nume){
Iterator<Med> it=ts.iterator();
while (it.hasNext()) {
if(nume.equalsIgnoreCase(it.next().getNume())) {
it.remove();
JOptionPane.showMessageDialog(null, "Fisa a fost stearsa din agenda telefonica", "Information", JOptionPane.INFORMATION_MESSAGE);
return;
}
}
JOptionPane.showMessageDialog(null, "Fisa nu se gaseste in agenda telefonica", "Alert", JOptionPane.ERROR_MESSAGE);
}
public void salveaza(){
try{
pw=new PrintWriter(new FileWriter("fise.txt"));
for(Med f: ts) pw.println(f);
pw.close();
}catch(IOException e){e.printStackTrace();}
}
public static Farmacie getInstanta(){ if (instanta==null) instanta=new Farmacie();
return instanta;
}
}
import java.awt.*;import java.awt.event.*;
public class MedNouFrame extends Frame{
private GestorEvenimenteFNF ec;
private TextField lt, at, tt, aet, mt, pt;
private Button ok, cancel;
public MedNouFrame(){
super ("Adauga un med nou");
Panel p=new Panel();
p.setLayout(new GridLayout(6,2,10,10));
p.setBackground(Color.lightGray);
p.add(new Label("Nume"));
lt=new TextField(10);
p.add(lt);
p.add(new Label("Comp"));
at=new TextField(10);
p.add(at);
p.add(new Label("ind"));
tt=new TextField(10);
p.add(tt);
p.add(new Label("cind"));
aet=new TextField(10);
p.add(aet);
p.add(new Label("mod"));
mt=new TextField(10);
p.add(mt);
p.add(new Label("pret"));
pt=new TextField(10);
p.add(pt);
add(p);
ec=new GestorEvenimenteFNF();
p=new Panel();
ok=new Button("OK");
ok.addActionListener(ec);
p.add(ok);
cancel=new Button("Cancel");
cancel.addActionListener(ec);
p.add(cancel);
add(p, BorderLayout.SOUTH);
setLocation(300,300);
}
private class GestorEvenimenteFNF implements ActionListener{
private Farmacie tnb;
GestorEvenimenteFNF(){tnb=Farmacie.getInstanta();}
public void actionPerformed(ActionEvent e){
if(e.getSource()==ok) {
tnb.adaugaMed(lt.getText(),at.getText(),tt.getText(), aet.getText(), mt.getText(), pt.getText());
MedNouFrame.this.dispose();
}
else MedNouFrame.this.dispose();
} }}
import java.awt.*;import java.awt.event.*;
public class CautaMedFrame extends Frame{
private GestorEvenimenteCFF ec;
private TextField t;
private TextArea ta;
public CautaMedFrame(){
super("Cauta med");
Panel p=new Panel();
p.add(new Label("Introduceti nume"));
t=new TextField(10);
ec=new GestorEvenimenteCFF();
t.addActionListener(ec);
p.add(t);
add(p, BorderLayout.NORTH);
ta=new TextArea(20,50);
add(ta);
setSize(300,200);
setLocation(300,300);
addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent we){
CautaMedFrame.this.dispose();
}});
}
private class GestorEvenimenteCFF implements ActionListener{
private Farmacie at;
GestorEvenimenteCFF(){at=Farmacie.getInstanta();}
public void actionPerformed(ActionEvent e){
if (e.getSource()==t){
ta.setText(at.cautaMed(t.getText()));
t.setText("");
}
} }}
import java.awt.*;import java.awt.event.*;
public class StergeMedFrame extends Frame{
private GestorEvenimenteFF ec;
private TextField t;
private Button ok, c;
public StergeMedFrame(){
super ("Sterge o fisa");
Panel p=new Panel();
p.setBackground(Color.lightGray);
p.add(new Label("Introduceti nume si prenume"));
t=new TextField(10);
p.add(t);
add(p);
p=new Panel();
ec=new GestorEvenimenteFF();
ok=new Button("OK");
ok.addActionListener(ec);
p.add(ok);
c=new Button("Cancel");
c.addActionListener(ec);
p.add(c);
add(p, BorderLayout.SOUTH);
setSize(300,100);
setLocation(300,300);
}
private class GestorEvenimenteFF implements ActionListener{
private Farmacie at;
GestorEvenimenteFF(){ at=Farmacie.getInstanta(); }
public void actionPerformed(ActionEvent e){
if (e.getSource()==ok) {
at.stergeMed(t.getText());
t.setText("");
}
else StergeMedFrame.this.dispose();
} }}
import java.awt.*;
import java.awt.event.*;
public class MedFrame extends Frame{
private TextArea ta;
private Farmacie at;
public MedFrame(){
super ("Agenda telefonica");
add(new Label("Toate fisele"), BorderLayout.NORTH);
ta=new TextArea(20,200);
at=Farmacie.getInstanta();
ta.setText(at.getMed());
ta.setEnabled(false);
add(ta);
setSize(500,300);
setLocation(300,300);
addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent we){
MedFrame.this.dispose();
}});
} }
import java.awt.*;import java.awt.event.*;
public class FereastraPrincipala extends Frame{
private GestorEvenimenteFP ec;
private Button[] b;
public FereastraPrincipala(){
super ("Bine ati venit!");
Panel p=new Panel();
p.setLayout(new GridLayout(3,2,10,10));
p.setBackground(Color.lightGray);
String[] s=new String[]{"Creaza fisa noua", "Cauta fisa", "Sterge fisa", "Arata continut agenda telefonica",
"Salveaza toate fisele"};
ec=new GestorEvenimenteFP();
b=new Button[5];
for (int i=0; i<b.length; i++){
b[i]=new Button(s[i]);
b[i].addActionListener(ec);
p.add(b[i]);
}
add(p);
}
private class GestorEvenimenteFP implements ActionListener{
private Frame f;
public void actionPerformed(ActionEvent e){
if(e.getSource()==b[0]){
f=new MedNouFrame();
f.pack();
f.setVisible(true);
}
else if(e.getSource()==b[1]){ f=new CautaMedFrame(); f.setVisible(true); }
else if(e.getSource()==b[2]){ f=new StergeMedFrame(); f.setVisible(true); }
else if(e.getSource()==b[3]){ f=new MedFrame(); f.setVisible(true); }
else { Farmacie at=Farmacie.getInstanta(); at.salveaza(); }
}
}
public static void main(String[] args){
Frame w=new FereastraPrincipala();
w.setSize(375, 150);
w.setLocation(300,300);
w.setVisible(true);
w.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){System.exit(0);}
});
}
}
答案 0 :(得分：0)
我对Farmacie构造函数进行了一些更改。我对行中第一个元素的拆分进行了一些检查。如果没有空间那么它就会失败。否则你的代码就可以了。
private Farmacie() {
File f = new File("G:\\med.txt");
ts = new TreeSet<Med>();
String[] s, s1;
String ae;
if (f.exists()) {
try {
br = new BufferedReader(new FileReader(f));
while ((l = br.readLine()) != null) {
s = l.split("_");
s1 = s[0].split(" ");
String first = s1[0];
String second = null;
if (s1.length > 1)
second = s1[1];
med = new Med(first, second, s[1], s[2], s[3], s[4]);
ts.add(med);
}
} catch (IOException ioe) {
ioe.printStackTrace();
}
} else
System.out.println("Fisierul nu exista");
}