Hallo ich war dabei einen eigenen kleinen Taschenrechner zu programmieren (bitte nicht die Programmierweise kritisieren bin Anfänger) und hab jetzt eine Fehlermeldung aus der ich nicht schlau werde.
[code=Java]import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
/**
*
* Beschreibung
*
* @version 1.0 vom 16.04.2016
* @author
*/
public class langeweilemachtsmöglich extends JFrame {
// Anfang Attribute
private JButton Ziffer1 = new JButton();
private JButton Ziffer2 = new JButton();
private JButton Ziffer3 = new JButton();
private JButton Ziffer4 = new JButton();
private JButton Ziffer5 = new JButton();
private JButton Ziffer6 = new JButton();
private JButton Ziffer7 = new JButton();
private JButton Ziffer8 = new JButton();
private JButton Ziffer9 = new JButton();
private JButton Ziffer0 = new JButton();
private JButton Komma = new JButton();
private JButton Rechnen = new JButton();
private JButton Plus = new JButton();
private JButton Minus = new JButton();
private JButton Mal = new JButton();
private JButton Geteilt = new JButton();
private JTextField Ergebnis = new JTextField();
private JButton Delete = new JButton();
private JButton weg = new JButton();
// Ende Attribute
double e = 0;
double c = 0;
double b = 0;
double a = 0;
int d = 7;
public langeweilemachtsmöglich(String title) {
// Frame-Initialisierung
super(title);
setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
int frameWidth = 366;
int frameHeight = 284;
setSize(frameWidth, frameHeight);
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
int x = (d.width - getSize().width) / 2;
int y = (d.height - getSize().height) / 2;
setLocation(x, y);
setResizable(false);
Container cp = getContentPane();
cp.setLayout(null);
// Anfang Komponenten
Ziffer1.setBounds(16, 136, 75, 25);
Ziffer1.setText("1");
Ziffer1.setMargin(new Insets(2, 2, 2, 2));
Ziffer1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Ziffer1_ActionPerformed(evt);
}
});
cp.add(Ziffer1);
Ziffer2.setBounds(96, 136, 75, 25);
Ziffer2.setText("2");
Ziffer2.setMargin(new Insets(2, 2, 2, 2));
Ziffer2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Ziffer2_ActionPerformed(evt);
}
});
cp.add(Ziffer2);
Ziffer3.setBounds(176, 136, 75, 25);
Ziffer3.setText("3");
Ziffer3.setMargin(new Insets(2, 2, 2, 2));
Ziffer3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Ziffer3_ActionPerformed(evt);
}
});
cp.add(Ziffer3);
Ziffer4.setBounds(16, 112, 75, 25);
Ziffer4.setText("4");
Ziffer4.setMargin(new Insets(2, 2, 2, 2));
Ziffer4.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Ziffer4_ActionPerformed(evt);
}
});
cp.add(Ziffer4);
Ziffer5.setBounds(96, 112, 75, 25);
Ziffer5.setText("5");
Ziffer5.setMargin(new Insets(2, 2, 2, 2));
Ziffer5.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Ziffer5_ActionPerformed(evt);
}
});
cp.add(Ziffer5);
Ziffer6.setBounds(176, 112, 75, 25);
Ziffer6.setText("6");
Ziffer6.setMargin(new Insets(2, 2, 2, 2));
Ziffer6.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Ziffer6_ActionPerformed(evt);
}
});
cp.add(Ziffer6);
Ziffer7.setBounds(16, 88, 75, 25);
Ziffer7.setText("7");
Ziffer7.setMargin(new Insets(2, 2, 2, 2));
Ziffer7.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Ziffer7_ActionPerformed(evt);
}
});
cp.add(Ziffer7);
Ziffer8.setBounds(96, 88, 75, 25);
Ziffer8.setText("8");
Ziffer8.setMargin(new Insets(2, 2, 2, 2));
Ziffer8.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Ziffer8_ActionPerformed(evt);
}
});
cp.add(Ziffer8);
Ziffer9.setBounds(176, 88, 75, 25);
Ziffer9.setText("9");
Ziffer9.setMargin(new Insets(2, 2, 2, 2));
Ziffer9.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Ziffer9_ActionPerformed(evt);
}
});
cp.add(Ziffer9);
Ziffer0.setBounds(16, 160, 75, 25);
Ziffer0.setText("0");
Ziffer0.setMargin(new Insets(2, 2, 2, 2));
Ziffer0.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Ziffer0_ActionPerformed(evt);
}
});
cp.add(Ziffer0);
Komma.setBounds(96, 160, 75, 25);
Komma.setText(".");
Komma.setMargin(new Insets(2, 2, 2, 2));
Komma.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Komma_ActionPerformed(evt);
}
});
cp.add(Komma);
Rechnen.setBounds(176, 160, 75, 25);
Rechnen.setText("Exe");
Rechnen.setMargin(new Insets(2, 2, 2, 2));
Rechnen.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Rechnen_ActionPerformed(evt);
}
});
cp.add(Rechnen);
Plus.setBounds(256, 160, 75, 25);
Plus.setText("+");
Plus.setMargin(new Insets(2, 2, 2, 2));
Plus.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Plus_ActionPerformed(evt);
}
});
cp.add(Plus);
Minus.setBounds(256, 136, 75, 25);
Minus.setText("-");
Minus.setMargin(new Insets(2, 2, 2, 2));
Minus.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Minus_ActionPerformed(evt);
}
});
cp.add(Minus);
Mal.setBounds(256, 112, 75, 25);
Mal.setText("*");
Mal.setMargin(new Insets(2, 2, 2, 2));
Mal.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Mal_ActionPerformed(evt);
}
});
cp.add(Mal);
Geteilt.setBounds(256, 88, 75, 25);
Geteilt.setText("/");
Geteilt.setMargin(new Insets(2, 2, 2, 2));
Geteilt.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Geteilt_ActionPerformed(evt);
}
});
cp.add(Geteilt);
Ergebnis.setBounds(176, 56, 150, 28);
Ergebnis.setText(Text2);
Ergebnis.setHorizontalAlignment(SwingConstants.RIGHT);
cp.add(Ergebnis);
Delete.setBounds(16, 57, 75, 25);
Delete.setText("Ac");
Delete.setMargin(new Insets(2, 2, 2, 2));
Delete.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Delete_ActionPerformed(evt);
}
});
cp.add(Delete);
weg.setBounds(96, 57, 75, 25);
weg.setText("Del");
weg.setMargin(new Insets(2, 2, 2, 2));
weg.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
weg_ActionPerformed(evt);
}
});
cp.add(weg);
// Ende Komponenten
setVisible(true);
} // end of public langeweilemachtsmöglich
// Anfang Methoden
String Text = "";
String Text2 = "0";
int Löschsteuerung = 0;
public static void main(String[] args) {
new langeweilemachtsmöglich("langeweilemachtsmöglich");
} // end of main
public void Ziffer1_ActionPerformed(ActionEvent evt) {
if (Löschsteuerung==1) {
a = 0;
b = 0;
c = 0;
d = 7;
Text = "";
Ergebnis.setText(Text);
Löschsteuerung = 0;
} // end of if
Text = Text + "1";
Ergebnis.setText(Text);
} // end of Ziffer1_ActionPerformed
public void Ziffer2_ActionPerformed(ActionEvent evt) {
Text = Text + "2";
Ergebnis.setText(Text);
} // end of Ziffer2_ActionPerformed
public void Ziffer3_ActionPerformed(ActionEvent evt) {
Text = Text + "3";
Ergebnis.setText(Text);
} // end of Ziffer3_ActionPerformed
public void Ziffer4_ActionPerformed(ActionEvent evt) {
Text = Text + "4";
Ergebnis.setText(Text);
} // end of Ziffer4_ActionPerformed
public void Ziffer5_ActionPerformed(ActionEvent evt) {
Text = Text + "5";
Ergebnis.setText(Text);
} // end of Ziffer5_ActionPerformed
public void Ziffer6_ActionPerformed(ActionEvent evt) {
Text = Text + "6";
Ergebnis.setText(Text);
} // end of Ziffer6_ActionPerformed
public void Ziffer7_ActionPerformed(ActionEvent evt) {
Text = Text + "7";
Ergebnis.setText(Text);
} // end of Ziffer7_ActionPerformed
public void Ziffer8_ActionPerformed(ActionEvent evt) {
Text = Text + "8";
Ergebnis.setText(Text);
} // end of Ziffer8_ActionPerformed
public void Ziffer9_ActionPerformed(ActionEvent evt) {
Text = Text + "9";
Ergebnis.setText(Text);
} // end of Ziffer9_ActionPerformed
public void Ziffer0_ActionPerformed(ActionEvent evt) {
Text = Text + "0";
Ergebnis.setText(Text);
} // end of Ziffer0_ActionPerformed
public void Komma_ActionPerformed(ActionEvent evt) {
Text = Text + ".";
Ergebnis.setText(Text);
} // end of Komma_ActionPerformed
public void Plus_ActionPerformed(ActionEvent evt) {
double a = Double.parseDouble(Text);
e = a;
Text = "";
Ergebnis.setText(Text);
d = 0;
} // end of Plus_ActionPerformed
public void Minus_ActionPerformed(ActionEvent evt) {
double a = Double.parseDouble(Text);
e = a;
Text = "";
Ergebnis.setText(Text);
d = 1;
} // end of Minus_ActionPerformed
public void Mal_ActionPerformed(ActionEvent evt) {
double a = Double.parseDouble(Text);
e = a;
Text = "";
Ergebnis.setText(Text);
d = 2;
} // end of Mal_ActionPerformed
public void Geteilt_ActionPerformed(ActionEvent evt) {
double a = Double.parseDouble(Text);
e = a;
Text = "";
Ergebnis.setText(Text);
d = 3;
} // end of Geteilt_ActionPerformed
public void Delete_ActionPerformed(ActionEvent evt) {
double a = 0;
double b = 0;
double c = 0;
double e = 0;
Text = "";
Text2 = "0";
Ergebnis.setText(Text2);
} // end of Delete_ActionPerformed
public void Rechnen_ActionPerformed(ActionEvent evt) {
double b = Double.parseDouble(Text);
if (d==0) {
c = e + b;
} // end of if
if (d==1) {
c = e - b;
} // end of if
if (d==2) {
c = e * b;
} // end of if
String Text = (new Double(c).toString());
Ergebnis.setText(Text);
if (d==3) {
c = e / b;
if (b==0) {
String Text2 = (new Double(c).toString());
Ergebnis.setText(Text2 + " !Kann nicht durch 0 teilen!");
} // end of if
} // end of if
Löschsteuerung = 1;
} // end of if
} // end of Rechnen_ActionPerformed
public void weg_ActionPerformed(ActionEvent evt) {
int Textlänge = 0;
Text = Ergebnis.getText();
Textlänge = Text.length();
Text = Text.substring(0,f-1);
Ergebnis.setText(Text);
} // end of weg_ActionPerformed
// Ende Methoden
} // end of class langeweilemachtsmöglich
[/code]
und hier die fehlermeldung:
[code]Compiliere F:\langeweilemachtsmöglich.java mit Java-Compiler
langeweilemachtsmöglich.java:385:12: error: class, interface, or enum expected
public void weg_ActionPerformed(ActionEvent evt) {
^
langeweilemachtsmöglich.java:387:5: error: class, interface, or enum expected
Text = Ergebnis.getText();
^
langeweilemachtsmöglich.java:388:5: error: class, interface, or enum expected
Textlänge = Text.length();
^
langeweilemachtsmöglich.java:389:5: error: class, interface, or enum expected
Text = Text.substring(0,f-1);
^
langeweilemachtsmöglich.java:390:5: error: class, interface, or enum expected
Ergebnis.setText(Text);
^
langeweilemachtsmöglich.java:391:3: error: class, interface, or enum expected
} // end of weg_ActionPerformed
^
6 errors
[/code]
schonmal danke im vorraus und wie gesagt bitte nur auf den Fehler eingehen nicht den Rest des Programms.
