Exception in thread "AWT-EventQueue-0"?

Question

Java

I am writing a code parser , but an
error occurs when I click the main function call button for the second time in a row $2.actionPerformed(Win_Token.java:57) at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) at javax .swing.DefaultButtonModel.setPressed(Unknown Source) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source) at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java .awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt .LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$500(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source )
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java .awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class TakeTheToken {

  public class object {
    String token;
    int type_token;		
  }

  public String token;
  public int type_token;

  public TakeTheToken(String token, int type_token) {
    this.token = token;
    this.type_token = type_token;
  }

  static TakeTheToken ex[];
  public static int count = 0;

  public static String main() throws IOException {
    String str = Open();
    System.out.println(str);
    addToken(str);
    String s = "";
    for (int i = 0; i < count; i++) {// Вывод объекта
      s += "\n" + ex[i].token + " " + ex[i].type_token + "\n";
    }
    
    return s;
  }

  public static String Open() throws IOException {
    File f = new File("D:\\1.txt");
    FileReader fr = null;
    try {
      fr = new FileReader(f);
    } catch (FileNotFoundException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
    @SuppressWarnings("resource")
    BufferedReader br = new BufferedReader(fr);
    StringBuffer sb = new StringBuffer();
    String eachLine = null;
    try {
      eachLine = br.readLine();
    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
    while (eachLine != null) {
      sb.append(eachLine);
      sb.append("\n");
      try {
        eachLine = br.readLine();
      } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }
    }



    return sb.toString().replaceAll("[\\t]", " ");

  }


  public static void addToken(String str) { //Разбивает на токены
    int c = 0;
    ex = new TakeTheToken[str.length()];
    char[] type = str.toCharArray();
    int i = 0;
    String word = "", number = "", charius = "";


    while (i < str.length()) {

      String typeChar = Character.toString(type[i]);
      if (RegExp(typeChar) == 1) {//Если буквы        

        while (RegExp(typeChar) == 1) {                 
          word += typeChar;                   
          i++;
          if (i < str.length()) {
            typeChar = String.valueOf(type[i]);
          } else break;               
        }


        ex[c] = new TakeTheToken(word, typeToken(word, 1));
        c++;
        count++;
        System.out.print(word);
        word = "";

      } 

      if (RegExp(typeChar) == 2) {//Если цифры
        while (RegExp(typeChar) == 2) {                 
          number += typeChar;                 
          i++;
          if (i < str.length()) {
            typeChar = String.valueOf(type[i]);
          } else break;
        }

        ex[c] = new TakeTheToken(number, 3);
        c++;
        count++;

        System.out.print(number);
        number = "";

      } 

      if (RegExp(typeChar) == 3) { 
        if (type[i] == '+') {
          while (type[i] == '+') {
            charius += typeChar;						
            if (i+1 < str.length() && type[i+1] == '+') {
              i++;
              typeChar = String.valueOf(type[i]);
            } else break;
          }
          ex[c] = new TakeTheToken(charius, 4);
          c++;
          count++;
          System.out.print(charius);
          charius = "";
        }


        if (type[i] == '-') {
          while (type[i] == '-') {
            charius += typeChar;						
            if (i+1 < str.length() && type[i+1] == '-') {
              i++;
              typeChar = String.valueOf(type[i]);
            } else break;
          }
          ex[c] = new TakeTheToken(charius, 4);
          c++;
          count++;
          System.out.print(charius);
          charius = "";
        }


        if (type[i] == '"') {
          charius += typeChar;
          ex[c] = new TakeTheToken(charius, 5);
          c++;
          count++;
          System.out.print(charius);
          charius = "";
          i++;
          typeChar = String.valueOf(type[i]);
          while (type[i] != '"') {											
            if (i+1 < str.length() && type[i] != '"') {							
              typeChar = String.valueOf(type[i]);
              i++;
              charius += typeChar;	
            }
          }
          ex[c] = new TakeTheToken(charius, 3);
          c++;
          count++;
          System.out.print(charius);
          charius = "";


          typeChar = String.valueOf(type[i]);
          charius += typeChar;
          ex[c] = new TakeTheToken(charius, 5);
          c++;
          count++;
          System.out.print(charius);
          charius = "";	
        }	

        if (type[i] == '\'') {
          charius += typeChar;
          ex[c] = new TakeTheToken(charius, 5);
          c++;
          count++;
          System.out.print(charius);
          charius = "";
          i++;
          typeChar = String.valueOf(type[i]);
          while (type[i] != '\'') {											
            if (i+1 < str.length() && type[i] != '\'') {							
              typeChar = String.valueOf(type[i]);
              i++;
              charius += typeChar;	
            }
          }
          ex[c] = new TakeTheToken(charius, 3);
          c++;
          count++;
          System.out.print(charius);
          charius = "";


          typeChar = String.valueOf(type[i]);
          charius += typeChar;
          ex[c] = new TakeTheToken(charius, 5);
          c++;
          count++;
          System.out.print(charius);
          charius = "";	
        }	

        if (type[i] == '!') {	
          typeChar = String.valueOf(type[i]);
          charius += typeChar;
          if (type[i+1] == '=') {	
            i++;
            typeChar = String.valueOf(type[i]);						
            charius += typeChar;	
            ex[c] = new TakeTheToken(charius, 4);
            c++;
            count++;
            System.out.print(charius);
            charius = "";
          } else {
            ex[c] = new TakeTheToken(charius, 4);
            c++;
            count++;
            System.out.print(charius);
            charius = "";
          }		
        }

        if (type[i] == '=') {	
          typeChar = String.valueOf(type[i]);
          charius += typeChar;
          if (type[i+1] == '=') {	
            i++;
            typeChar = String.valueOf(type[i]);						
            charius += typeChar;	
            ex[c] = new TakeTheToken(charius, 4);
            c++;
            count++;
            System.out.print(charius);
            charius = "";
          } else {
            ex[c] = new TakeTheToken(charius, 4);
            c++;
            count++;
            System.out.print(charius);
            charius = "";
          }		
        }

        if (type[i] == '<') {	
          typeChar = String.valueOf(type[i]);
          charius += typeChar;
          if (type[i+1] == '=') {	
            i++;
            typeChar = String.valueOf(type[i]);						
            charius += typeChar;	
            ex[c] = new TakeTheToken(charius, 4);
            c++;
            count++;
            System.out.print(charius);
            charius = "";
          } else {
            ex[c] = new TakeTheToken(charius, 4);
            c++;
            count++;
            System.out.print(charius);
            charius = "";
          }		
        }

            
        }
        
      }	

      i++;
    }   

  }

}

Answer 1

That's it.

public static String main(String[] args) throws IOException {
    String str = Open();
    System.out.println(str);
    addToken(str);
    String s = "";
    for (int i = 0; i < count; i++) {// Вывод объекта	
      if (ex[i] != null) {
        s += ex[i].token + " " + ex[i].type_token + "\n";
      }
    }
    ex = new TakeTheToken[0];
    count = 0;
    return s;
  }