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Thread: applets

  1. #1
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    Default applets

    HI, Can someone help me. In the checkbox below, what I want to achieve is, as a selection is made, (say 120), the value 120 to be part of the drawLine method. Thank you for your time.

    [code = java]
    import java.applet.*; import java.awt.*; import java.awt.event.*; import java.lang.*;
    public class choice extends Applet implements ItemListener{
    Choice lang;
    String msg="";

    public void init(){
    lang = new Choice();

    lang.add("110");
    lang.add("120");
    lang.add("130");
    lang.add("140");
    lang.add("150");

    add(lang);

    lang.addItemListener(this);
    }

    public void itemStateChanged (ItemEvent e){
    repaint();
    }

    public void paint(Graphics g){
    msg = " ";
    msg = msg+lang.getSelectedItem();
    g.drawString(msg,100,40);
    }
    }
    [/code]


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: applets

    value 120 to be part of the drawLine method
    Put the value into a class variable and it will be available to any method in the class.

    Did you look at the post after you pressed the "Post Reply" button? Was it formatted correctly?
    Remove the spaces in the code tag.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: applets

    Sorry about the spaces in the tag. Will make sure not to repeat.

    Will you kindly show me how to put the value into a class variable, perhaps by modifying the code.



    import java.applet.*; import java.awt.*; import java.awt.event.*; import java.lang.*;
    public class choice extends Applet implements ItemListener{
    Choice lang;
    String msg="";
     
    public void init(){
    lang = new Choice();
     
    lang.add("110");
    lang.add("120");
    lang.add("130");
    lang.add("140");
    lang.add("150");
     
    add(lang);
     
    lang.addItemListener(this);
    }
     
    public void itemStateChanged (ItemEvent e){
    repaint();
    }
     
    public void paint(Graphics g){
    msg = " ";
    msg = msg+lang.getSelectedItem();
    g.drawString(msg,100,40);
    }
    }

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: applets

    how to put the value into a class variable
    For example msg is a class variable. You can assign a value to msg from anywhere in the class and any method will be able to access the contents of msg.


    What happened to the indentations of the statements? Now they all start in the first column????
    If you don't understand my answer, don't ignore it, ask a question.

  5. #5
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    Default Re: applets

    Sorry, I copied the code from the first message, that is the reason. I think I got what you meant.

    BTW, may god bless you truly well for all the help you volunteer.

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