Hallo noch mal, ein neues Problem ist aufgetaucht. Der vom Nutzer eingegebene Barcode soll mit Graphics g gezeichnet werden. Jetzt ist es aber so, dass sich die Zeichenfläche schon vor der Nutzereingabe öffnet und deswegen nichts gezeichnet werden kann. Wie kann ich das beheben?
Hier sind alle Klassen dazu:
[CODE lang="java" title="Barcode"]import java.awt.*;
import java.util.Scanner;
public class Barcode {
public void zeichneBarcode(Graphics g) {
Scanner s = new Scanner(System.in);
System.out.println("Geben Sie einen 12-stelligen Code ein: ");
String barcode = s.next();
for(int i=0; i<=6; i++) {
if(barcode.charAt(i)==0) {
g.setColor(Color.white);
for(int j=1; j<=3; j++) {
g.drawLine(50*j,50*j,50*j,200*j);
}
g.setColor(Color.black);
for(int j=1; j<=2; j++) {
}
}else if(barcode.charAt(i)==1) {
g.setColor(Color.white);
}
//das ist noch nicht fertig, deshalb einfach nicht beachten.
}
}
}
[/CODE]
[CODE lang="java" title="Painting"]import javax.swing.JPanel;
import java.awt.*;
public class Painting extends JPanel{
//ATTRIBUTE
private Barcode barcode;
public Painting(Frame f){
this.barcode = new Barcode();
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
this.barcode.zeichneBarcode(g);
}
}
[/CODE]
[CODE lang="java" title="BarcodeMasterPro"]public class BarcodeMasterPro {
public static void main(String[] args) {
new GUI();
}
}[/CODE]
[CODE lang="java" title="GUI"]public class GUI {
private Frame f;
private Painting painting;
public GUI() {
this.f = new Frame("BarcodeMasterPro", -1, -1, 1000, 800);
this.painting = new Painting(this.f);
this.f.getContentPane().add(this.painting);
this.f.setupFrame();
}
}[/CODE]
[CODE lang="java" title="Frame"]import javax.swing.JFrame;
public class Frame extends JFrame{
private String title;
private int x;
private int y;
private int width;
private int height;
public Frame(String title, int x, int y, int width, int height){
this.title = title;
this.x = x;
this.y = y;
this.width = width;
this.height = height;
}
public void setupFrame() {
setTitle(this.title);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setSize(this.width, this.height);
if(this.x==-1 && this.y == -1) {
setLocationRelativeTo(null); //centers the jFrame on the screen
}else {
setLocation(this.x, this.y);
}
setVisible(true);
}
public String getTitle() {
return title;
}
public int getX() {
return x;
}
public int getY() {
return y;
}
public int getWidth() {
return width;
}
public int getHeight() {
return height;
}
}
[/CODE]
Vielen Dank
Hier sind alle Klassen dazu:
[CODE lang="java" title="Barcode"]import java.awt.*;
import java.util.Scanner;
public class Barcode {
public void zeichneBarcode(Graphics g) {
Scanner s = new Scanner(System.in);
System.out.println("Geben Sie einen 12-stelligen Code ein: ");
String barcode = s.next();
for(int i=0; i<=6; i++) {
if(barcode.charAt(i)==0) {
g.setColor(Color.white);
for(int j=1; j<=3; j++) {
g.drawLine(50*j,50*j,50*j,200*j);
}
g.setColor(Color.black);
for(int j=1; j<=2; j++) {
}
}else if(barcode.charAt(i)==1) {
g.setColor(Color.white);
}
//das ist noch nicht fertig, deshalb einfach nicht beachten.
}
}
}
[/CODE]
[CODE lang="java" title="Painting"]import javax.swing.JPanel;
import java.awt.*;
public class Painting extends JPanel{
//ATTRIBUTE
private Barcode barcode;
public Painting(Frame f){
this.barcode = new Barcode();
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
this.barcode.zeichneBarcode(g);
}
}
[/CODE]
[CODE lang="java" title="BarcodeMasterPro"]public class BarcodeMasterPro {
public static void main(String[] args) {
new GUI();
}
}[/CODE]
[CODE lang="java" title="GUI"]public class GUI {
private Frame f;
private Painting painting;
public GUI() {
this.f = new Frame("BarcodeMasterPro", -1, -1, 1000, 800);
this.painting = new Painting(this.f);
this.f.getContentPane().add(this.painting);
this.f.setupFrame();
}
}[/CODE]
[CODE lang="java" title="Frame"]import javax.swing.JFrame;
public class Frame extends JFrame{
private String title;
private int x;
private int y;
private int width;
private int height;
public Frame(String title, int x, int y, int width, int height){
this.title = title;
this.x = x;
this.y = y;
this.width = width;
this.height = height;
}
public void setupFrame() {
setTitle(this.title);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setSize(this.width, this.height);
if(this.x==-1 && this.y == -1) {
setLocationRelativeTo(null); //centers the jFrame on the screen
}else {
setLocation(this.x, this.y);
}
setVisible(true);
}
public String getTitle() {
return title;
}
public int getX() {
return x;
}
public int getY() {
return y;
}
public int getWidth() {
return width;
}
public int getHeight() {
return height;
}
}
[/CODE]
Vielen Dank
