analyseur lexical

Question

hi, i tried to create an interface were the user inserts thepath of the file to analyze in jTextField1 & when jButton1 clicked the process starts ...but i find a problem of Nullpointer at line 175 !
package compilateur;
import java.awt.BorderLayout;
import java.awt.Dimension;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JToggleButton;
import javax.swing.JButton;
import javax.swing.JTextArea;
import javax.swing.JScrollPane;
import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.io.*;
import java.io.FileInputStream;

public class compilateur extends javax.swing.JFrame {
JPanel contentPane;
JLabel jLabel1 = new JLabel();
JLabel jLabel2 = new JLabel();
JLabel jLabel3 = new JLabel();
JTextField jTextField1=new JTextField();
JButton jButton1 = new JButton();
JScrollPane jScrollPane1 = new JScrollPane();
JScrollPane jScrollPane2 = new JScrollPane();
JTextArea jTextArea1 = new JTextArea();
JTextArea jTextArea2 = new JTextArea();

public compilateur(){
try{
setDefaultCloseOperation(EXIT_ON_CLOSE);
jbinit();
}catch(Exception e){
e.printStackTrace();

}
}
public void jbinit()throws Exception{
contentPane=(JPanel)getContentPane();
contentPane.setLayout(null);
setSize(new Dimension(470,500));
setTitle("Analyseur Lexical");
jLabel1.setFont(new java.awt.Font("Garamond",Font.BOLD,20));
jLabel1.setText("Analyseur Lexical");
jLabel1.setBounds(new Rectangle(125, 5, 160, 40));
jLabel2.setText("Chemin");
jLabel2.setBounds(new Rectangle(12, 45, 48, 24));
jTextField1.setBounds(new Rectangle(55,55,178,22));
jButton1.setBounds(new Rectangle(288,48,94,20));
jButton1.setText("Compiler");
jButton1.addActionListener(new compilateur_jButton1_actionAdapter(this));
jTextField1.addActionListener(new compilateur_jTextField1_actionAdapter(this));
jScrollPane1.setBounds(new Rectangle(12, 82, 372, 200));
jLabel3.setText("Erreurs:");
jLabel3.setBounds(new Rectangle(14,290,50,24));
jScrollPane2.setBounds(new Rectangle(12, 310, 375, 100));
contentPane.add(jLabel1);
contentPane.add(jLabel2);
contentPane.add(jTextField1);
contentPane.add(jButton1);
contentPane.add(jScrollPane1);
contentPane.add(jLabel3);
contentPane.add(jScrollPane2);
jScrollPane1.getViewport().add(jTextArea1);
jScrollPane2.getViewport().add(jTextArea2);
}
public void jButton1ActionPerformed(ActionEvent e){
jTextArea1.setText("_________Debut[Compilation Test]_________
");
try{
Scanner scanner = new Scanner(new FileInputStream(jTextField1.getText()));
scanner.next();
while(scanner.car!=ScannerTest.EOF){
jTextArea2.setText(scanner.err);
jTextArea1.append("[ligne:"+scanner.ligne+"]");
jTextArea1.append(ScannerTest.representation(scanner.car));
if((scanner.car==ScannerTest.CHF)||
(scanner.car==ScannerTest.ID)||
(scanner.car==ScannerTest.PLUS)||
(scanner.car==ScannerTest.MOINS)||
(scanner.car==ScannerTest.MULT)||
(scanner.car==ScannerTest.DIV)||
(scanner.car==ScannerTest.DEC_DR)||
(scanner.car==ScannerTest.DEC_GH)||
(scanner.car==ScannerTest.INF)||
(scanner.car==ScannerTest.SUP)||
(scanner.car==ScannerTest.EGL)||
(scanner.car==ScannerTest.SUP_EGL)||
(scanner.car==ScannerTest.INF_EGL)||
(scanner.car==ScannerTest.DIF)||
(scanner.car==ScannerTest.AFF)||
(scanner.car==ScannerTest.NON_LOG)||
(scanner.car==ScannerTest.ET_LOG)||
(scanner.car==ScannerTest.OU_LOG)||
(scanner.car==ScannerTest.IF)||
(scanner.car==ScannerTest.FI)||
(scanner.car==ScannerTest.FLT)||
(scanner.car==ScannerTest.WR)||
(scanner.car==ScannerTest.RD)||
(scanner.car==ScannerTest.STR)||
(scanner.car==ScannerTest.ELSE)||
(scanner.car==ScannerTest.BOL)||
(scanner.car==ScannerTest.UNT)||
(scanner.car==ScannerTest.FL)||
(scanner.car==ScannerTest.INT)||
(scanner.car==ScannerTest.TR)||
(scanner.car==ScannerTest.RPT)||
(scanner.car==ScannerTest.WLE)||
(scanner.car==ScannerTest.ELW)){
jTextArea1.append("("+scanner.chars+")
");
}else{
jTextArea1.append("
");
}
scanner.next();
}
scanner.close();
}catch(IOException ex){
//jTextArea1.append(ex);
System.exit(-1);
}
jTextArea1.append("______Fin [Compilation Test]______/n");
}
public void jTextField1ActionPerformed(ActionEvent e){

}
}
class compilateur_jTextField1_actionAdapter implements ActionListener{
private compilateur adaptee;
compilateur_jTextField1_actionAdapter(compilateur adaptee){
this.adaptee=adaptee;
}
public void actionPerformed(ActionEvent e){
adaptee.jTextField1ActionPerformed(e);
}
}
class compilateur_jButton1_actionAdapter implements ActionListener{
private compilateur adaptee;
compilateur_jButton1_actionAdapter(compilateur adapte){
this.adaptee=adaptee;
}

public void actionPerformed(ActionEvent e){
175: adaptee.jButton1ActionPerformed(e);
}

}
should i initialize variable : adaptee? & how?

Whismeril · Answer

Bonjour

CodeS SourceS est un forum francophone, soit

tu écris en français
tu vas poster ta question sur le forum anglophone du groupe ccm.net

Ensuite, ici ou là bas, pour poster un code il faut faire comme décrit là https://codes-sources.commentcamarche.net/faq/11288-les-balises-de-code

Une fois ces 2 conditions remplies, on pourra commencer à essayer de t'aider

Analyseur lexical

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