Hallo ich bringe bei 2en Projekten irgendwie einfach nicht diese nervenden Klammer und ; fehler weg. :pinch:
Projekt1:
Alles anzeigen
Meldung:
progressbar.java:17:5: illegal start of expression
public void actionPerformed(ActionEvent e) {
^
progressbar.java:36:1: ';' expected
}
^
progressbar.java:36:2: '}' expected
}
^
3 errors
buttonfunktion.java:19:32: cannot find symbol
symbol: class ActionEvent
public void actionPerformed( ActionEvent e ) {
^
1 error
Projekt2:
Alles anzeigen
Meldung:
progressbar.java:17:5: illegal start of expression
public void actionPerformed(ActionEvent e) {
^
progressbar.java:36:1: ';' expected
}
^
progressbar.java:36:2: '}' expected
}
^
3 errors
buttonfunktion.java:19:32: cannot find symbol
symbol: class ActionEvent
public void actionPerformed( ActionEvent e ) {
^
1 error
Projekt1:
Quellcode
- import java.io.*;
- import javax.swing.*;
- import java.net.*;
- import java.awt.*;
- import java.awt.event.*;
- public class progressbar {
- public static void main(String[] args) {
- Frame fenster = new Frame();
- fenster.setSize(100, 100);
- fenster.setTitle("LOADING");
- fenster.setLayout(null);
- JButton b = new JButton("Calculate");
- b.addActionListener(new ActionListener()); {
- public void actionPerformed(ActionEvent e) {
- for (int i = 0; i > 100; i++) {
- // Als Beispiel für eine
- // rechenintensive Operation
- try { Thread.sleep(100); }
- catch (InterruptedException ex) {}
- progressBar.setValue(i);
- button.setLabel("klick mich");
- button.setBounds(50, 50, 50, 50);
- fenster.add(JButton);
- progressBar.setValue(i);
- progressBar.paint(progressBar.getGraphics());
- fenster.setValue(true);
- fenster.setLocation(new Point(100, 100));
- }
- }
- }
Meldung:
progressbar.java:17:5: illegal start of expression
public void actionPerformed(ActionEvent e) {
^
progressbar.java:36:1: ';' expected
}
^
progressbar.java:36:2: '}' expected
}
^
3 errors
buttonfunktion.java:19:32: cannot find symbol
symbol: class ActionEvent
public void actionPerformed( ActionEvent e ) {
^
1 error
Projekt2:
Quellcode
- import java.awt.*;
- import java.awt.event.ActionListener;
- public class buttonfunktion {
- public static void main(String[] args) {
- Frame fenster = new Frame();
- fenster.setSize(250, 150);
- fenster.setLayout(null);
- fenster.setTitle("Button-Funktion");
- Button button = new Button();
- button.setBounds(25, 25 , 25, 25);
- button.setLabel("CLOSE");
- button.addActionListener( new ActionListener() {
- public void actionPerformed( ActionEvent e ) {
- System.exit( 0 );
- }
- } );
- fenster.add(button);
- fenster.setLocation(new Point(100, 100));
- fenster.setVisible(true);
- }
- }
Meldung:
progressbar.java:17:5: illegal start of expression
public void actionPerformed(ActionEvent e) {
^
progressbar.java:36:1: ';' expected
}
^
progressbar.java:36:2: '}' expected
}
^
3 errors
buttonfunktion.java:19:32: cannot find symbol
symbol: class ActionEvent
public void actionPerformed( ActionEvent e ) {
^
1 error