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src/Challenge/DiagramChallenge.java

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+package Challenge;
+
+import java.awt.*;
+import java.applet.*;
+import java.awt.event.*;
+
+
+
+public class DiagramChallenge extends Applet {
+
+    Button Toon;
+
+    TextField Valerie;
+    TextField Hans;
+    TextField Jeroen;
+
+    int gewichtValerie;
+    int gewichtHans;
+    int gewichtJeroen;
+
+
+    public void init() {
+
+        Toon = new Button("Toon");
+
+        Valerie = new TextField("40", 10);
+        Hans = new TextField("80", 10);
+        Jeroen = new TextField("100", 10);
+
+
+        gewichtValerie = 40;
+        gewichtHans = 80;
+        gewichtJeroen = 100;
+
+        Toon.addActionListener( new knopListener() );
+
+
+
+        add(Toon);
+        add(Valerie);
+        add(Hans);
+        add(Jeroen);
+
+
+    }
+
+
+    public void paint(Graphics g) {
+        setBackground(Color.white);
+
+
+        g.drawString("Valerie", 240, 780);
+        g.drawString("Hans", 370, 780);
+        g.drawString("Jeroen", 500, 780);
+
+        g.drawString("Valerie", 380, 50);
+        g.drawString("Hans", 490, 50);
+        g.drawString("Jeroen", 580, 50);
+
+
+        g.fillRect(210, 750, 380, 5);
+        g.fillRect(210, 105, 5, 650);
+
+
+        g.drawString("0", 180, 740);
+        g.drawString("20", 180, 640);
+        g.drawString("40", 180, 540);
+        g.drawString("60", 180, 440);
+        g.drawString("80", 180, 340);
+        g.drawString("100", 180, 240);
+        g.drawString("120", 180, 140);
+
+
+
+        g.setColor(Color.red);
+        g.fillRect(230, 740 - gewichtValerie * 5, 80, gewichtValerie * 5); //40 //y=400
+
+        g.fillRect(360, 740 - gewichtHans * 5, 80, gewichtHans * 5); //80
+
+        g.fillRect(490, 740 - gewichtJeroen * 5, 80, gewichtJeroen * 5); //100
+
+    }
+
+    class knopListener implements ActionListener {
+        public void actionPerformed(ActionEvent e) {
+            gewichtValerie = Integer.parseInt(Valerie.getText());
+            gewichtHans = Integer.parseInt(Hans.getText());
+            gewichtJeroen = Integer.parseInt(Jeroen.getText());
+
+            repaint();
+        }
+    }
+
+}

src/Challenge/FooiChallenge.java

@@ -0,0 +1,119 @@
+package Challenge;
+
+import java.applet.Applet;
+import java.awt.*;
+import java.awt.event.*;
+
+
+
+public class FooiChallenge extends Applet {
+
+    Button bereken;
+
+    Button plus;
+    Button min;
+
+    TextField tekstvak;
+    float FooiBedrag;
+    float Totaal;
+
+    String vakgetal;
+    float vakgetal2;
+
+
+    int FooiPercentage;
+int Fooipercentage2;
+
+public void init() {
+
+    bereken = new Button("Bereken");
+    tekstvak = new TextField(20);
+
+    plus = new Button("+");
+    min = new Button("-");
+
+    add(plus);
+    add(min);
+
+    add(tekstvak);
+    add(bereken);
+
+    bereken.addActionListener(new BerekenListener());
+    plus.addActionListener(new PlusListener());
+    min.addActionListener(new MinListener());
+
+
+
+
+
+}
+
+public void paint(Graphics g) {
+
+    plus.setLocation(160, 55);
+    min.setLocation(185, 55);
+
+    bereken.setLocation(20, 80);
+    tekstvak.setLocation(120, 10);
+
+
+    g.drawString("Rekening bedrag", 20, 25);
+    g.drawString("€", 290, 25);
+
+
+
+    g.drawString("Percentage fooi:", 20, 70);
+    g.drawString("" + FooiPercentage + "%", 130, 70);
+
+
+    g.drawString("Fooi: " + FooiBedrag + " €", 20, 130);
+    g.drawString("Totaal inc. fooi (" + Fooipercentage2 + "%):" + " " + Totaal + " €", 20, 150);
+
+}
+
+    class BerekenListener implements ActionListener {
+        public void actionPerformed(ActionEvent e) {
+
+          vakgetal = tekstvak.getText();
+          vakgetal2 = Float.parseFloat(vakgetal);
+
+          FooiBedrag = vakgetal2 / 100 * FooiPercentage;
+            FooiBedrag = ((int)(FooiBedrag * 100)) / 100F;
+
+            Totaal = vakgetal2 + FooiBedrag;
+            Totaal = ((int)(Totaal * 100)) / 100F;
+
+
+
+            Fooipercentage2 = FooiPercentage;
+
+
+
+            repaint();
+
+        }
+    }
+
+    class PlusListener implements ActionListener {
+        public void actionPerformed(ActionEvent e) {
+
+            FooiPercentage = FooiPercentage + 1;
+
+            repaint(FooiPercentage);
+
+        }
+    }
+
+    class MinListener implements ActionListener {
+        public void actionPerformed(ActionEvent e) {
+
+            FooiPercentage = FooiPercentage - 1;
+
+            repaint(FooiPercentage);
+
+        }
+    }
+
+
+
+}