update
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@@ -5,6 +5,7 @@ public class Fond {
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private JButton Cyan, Magenta, Jaune;
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public Fond() {
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this.setLayout(null);
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this.Cyan = new JButton("Cyan");
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this.Magenta = new JButton("Magenta");
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this.Jaune = new JButton("Jaune");
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@@ -12,5 +13,24 @@ public class Fond {
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this.Cyan.setBounds(100,50,100,20);
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this.Magenta.setBounds(220,50,100,20);
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this.Jaune.setBounds(320,50,100,20);
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this.Cyan.addActionListener(this);
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this.Magenta.addActionListener(this);
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this.Jaune.addActionListener(this);
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frame.add(this.Cyan);
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frame.add(this.Magenta);
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frame.add(this.Jaune);
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}
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@Override
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public void actionPerformed(ActionEvent evenement) {
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if (evenement.getSource() == this.Cyan) {
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frame.setBackground(Color.CYAN);
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} else if (evenement.getSource() == this.Magenta) {
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frame.setBackground(Color.MAGENTA);
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} else if (evenement.getSource() == this.Jaune) {
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frame.setBackground(Color.JAUNE);
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}
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}
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}
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@@ -6,13 +6,81 @@ public class MainFond {
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JFrame frame = new JFrame("Fond");
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frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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JPanel panel = new JPanel();
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Fond test = new Fond();
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Fond panel = new Fond();
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frame.add(panel, BorderLayout.CENTER);
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frame.setSize(500,500);
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frame.setLocation(500,250);
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frame.setVisible(true);
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}
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}
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}
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[srivasta@vm-srivasta 1.Fond]$ javac MainFond.java
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./Fond.java:27: error: cannot find symbol
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public void actionPerformed(ActionEvent evenement) {
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^
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symbol: class ActionEvent
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location: class Fond
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MainFond.java:12: error: no suitable method found for add(Fond,String)
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frame.add(panel, BorderLayout.CENTER);
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^
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method Container.add(String,Component) is not applicable
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(argument mismatch; Fond cannot be converted to String)
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method Container.add(Component,int) is not applicable
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(argument mismatch; Fond cannot be converted to Component)
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method Container.add(Component,Object) is not applicable
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(argument mismatch; Fond cannot be converted to Component)
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./Fond.java:8: error: cannot find symbol
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this.setLayout(null);
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^
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symbol: method setLayout(<null>)
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./Fond.java:17: error: incompatible types: Fond cannot be converted to ActionListener
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this.Cyan.addActionListener(this);
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^
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./Fond.java:18: error: incompatible types: Fond cannot be converted to ActionListener
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this.Magenta.addActionListener(this);
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^
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./Fond.java:19: error: incompatible types: Fond cannot be converted to ActionListener
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this.Jaune.addActionListener(this);
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^
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./Fond.java:21: error: cannot find symbol
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frame.add(this.Cyan);
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^
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symbol: variable frame
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location: class Fond
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./Fond.java:22: error: cannot find symbol
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frame.add(this.Magenta);
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^
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symbol: variable frame
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location: class Fond
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./Fond.java:23: error: cannot find symbol
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frame.add(this.Jaune);
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^
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symbol: variable frame
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location: class Fond
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./Fond.java:26: error: method does not override or implement a method from a supertype
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@Override
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^
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./Fond.java:29: error: cannot find symbol
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frame.setBackground(Color.CYAN);
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^
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symbol: variable frame
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location: class Fond
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./Fond.java:31: error: cannot find symbol
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frame.setBackground(Color.MAGENTA);
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^
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symbol: variable frame
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location: class Fond
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./Fond.java:33: error: cannot find symbol
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frame.setBackground(Color.JAUNE);
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^
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symbol: variable JAUNE
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location: class Color
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./Fond.java:33: error: cannot find symbol
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frame.setBackground(Color.JAUNE);
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^
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symbol: variable frame
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location: class Fond
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Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
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14 errors
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