Why the appletViewer not working

i want to run my applet program through AppletViewer, but when I type
AppletViewer tree.html, there is no error, but nothing promp up too,
if I use the broswer IE to run the tree.html file, it is work
any one know why I can not use the appletViewer to see the applet?

hi, thanks your reply
yes, I had give the resource code to the file
<html>
<applet code = tree.class height = 600 width = 600>
</html>
so, are there any other work I need to insert?hi,
the code is okay but you might have to make it like this:
/*<html>
<applet code = "tree.class" height = 600 width = 600>
</html>*/because it does not need to be complied.
with this much and the command,
appletviewer tree.java
at the command line would work fine.
hope you get through.
P.S. if you are having problems, please try posting the error too.
[email protected]

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Applet Working in the AppletViewer not Working in Explorer

After a few compilation of the following code the changes I made to the java file were only viewed by the appletviewer, not the explorer, the change I have made and is not shown in the explorer is setting the foreground and back round of calPanel label. Please compile the code yourself:
import java.awt.*;
import java.lang.*;
import java.awt.event.*;
public class JavaCal extends java.applet.Applet implements ActionListener {
// The 2 variables contain the numbers
// for the action to take place
double doubleBuf1 = 0;
double doubleBuf2 = 0;
// Contains the numbers and act in string format
StringBuffer totalBuffer = new StringBuffer();
// Interface components
Button calPercent, calSqr, calClear, calDev, calSeven, calEight, calNine, calMul, calFour, calFive, calSix, calSub, calOne, calTwo, calThree, calAdd, calNull, calDec, calEquals;
Label calPanel = new Label("0", Label.RIGHT);
void buildConstraints(GridBagConstraints gbc, int gx, int gy,
int gw, int gh, int wx, int wy) {
gbc.gridx = gx;
gbc.gridy = gy;
gbc.gridwidth = gw;
gbc.gridheight = gh;
gbc.weightx = wx;
gbc.weighty = wy;
public void init() {
setBackground(Color.white);
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints constraints = new GridBagConstraints();
setLayout(gridbag);
//Calculator Panel label field
buildConstraints(constraints, 0, 0, 4, 1, 0, 2);
constraints.fill = GridBagConstraints.BOTH;
gridbag.setConstraints(calPanel, constraints);
          calPanel.setForeground(new Color(65280));
          calPanel.setBackground(new Color(0));
add(calPanel);
constraints.fill = GridBagConstraints.NONE;
//Button %
buildConstraints(constraints, 0, 1, 1, 1, 100, 100);
constraints.fill = GridBagConstraints.BOTH;
calPercent = new Button("%");
gridbag.setConstraints(calPercent, constraints);
add(calPercent);
calPercent.addActionListener(this);
//Button Sqr
buildConstraints(constraints, 1, 1, 1, 1, 100, 100);
calSqr = new Button("sqr");
gridbag.setConstraints(calSqr, constraints);
add(calSqr);
calSqr.addActionListener(this);
//Button Clear
buildConstraints(constraints, 2, 1, 1, 1, 100, 100);
constraints.fill = GridBagConstraints.BOTH;
calClear = new Button("c");
gridbag.setConstraints(calClear, constraints);
add(calClear);
calClear.addActionListener(this);
//Button \
buildConstraints(constraints, 3, 1, 1, 1, 100, 100);
calDev = new Button("/");
gridbag.setConstraints(calDev, constraints);
add(calDev);
calDev.addActionListener(this);
//Button 7
buildConstraints(constraints, 0, 2, 1, 1, 100, 100);
calSeven = new Button("7");
gridbag.setConstraints(calSeven, constraints);
add(calSeven);
calSeven.addActionListener(this);
//Button 8
buildConstraints(constraints, 1, 2, 1, 1, 100, 100);
calEight = new Button("8");
gridbag.setConstraints(calEight, constraints);
add(calEight);
calEight.addActionListener(this);
//Button 9
buildConstraints(constraints, 2, 2, 1, 1, 100, 100);
calNine = new Button("9");
gridbag.setConstraints(calNine, constraints);
add(calNine);
calNine.addActionListener(this);
//Button *
buildConstraints(constraints, 3, 2, 1, 1, 100, 100);
calMul = new Button("*");
gridbag.setConstraints(calMul, constraints);
add(calMul);
calMul.addActionListener(this);
//Button 4
buildConstraints(constraints, 0, 3, 1, 1, 100, 100);
calFour = new Button("4");
gridbag.setConstraints(calFour, constraints);
add(calFour);
          calFour.addActionListener(this);
//Button 5
buildConstraints(constraints, 1, 3, 1, 1, 100, 100);
calFive = new Button("5");
gridbag.setConstraints(calFive, constraints);
add(calFive);
          calFive.addActionListener(this);
//Button 6
buildConstraints(constraints, 2, 3, 1, 1, 100, 100);
calSix = new Button("6");
gridbag.setConstraints(calSix, constraints);
add(calSix);
          calSix.addActionListener(this);
//Button -
buildConstraints(constraints, 3, 3, 1, 1, 100, 100);
calSub = new Button("-");
gridbag.setConstraints(calSub, constraints);
add(calSub);
calSub.addActionListener(this);
//Button 1
buildConstraints(constraints, 0, 4, 1, 1, 100, 100);
calOne = new Button("1");
gridbag.setConstraints(calOne, constraints);
add(calOne);
          calOne.addActionListener(this);
//Button 2
buildConstraints(constraints, 1, 4, 1, 1, 100, 100);
calTwo = new Button("2");
gridbag.setConstraints(calTwo, constraints);
add(calTwo);
calTwo.addActionListener(this);
//Button 3
buildConstraints(constraints, 2, 4, 1, 1, 100, 100);
calThree = new Button("3");
gridbag.setConstraints(calThree, constraints);
add(calThree);
calThree.addActionListener(this);
//Button +
buildConstraints(constraints, 3, 4, 1, 2, 100, 100);
calAdd = new Button("+");
gridbag.setConstraints(calAdd, constraints);
add(calAdd);
calAdd.addActionListener(this);
//Button 0
buildConstraints(constraints, 0, 5, 1, 1, 100, 100);
calNull = new Button("0");
gridbag.setConstraints(calNull, constraints);
add(calNull);
calNull.addActionListener(this);
//Button .
buildConstraints(constraints, 1, 5, 1, 1, 100, 100);
calDec = new Button(".");
gridbag.setConstraints(calDec, constraints);
add(calDec);
calDec.addActionListener(this);
//Button =
buildConstraints(constraints, 2, 5, 1, 1, 100, 100);
calEquals = new Button("=");
gridbag.setConstraints(calEquals, constraints);
add(calEquals);
calEquals.addActionListener(this);
     public void actionPerformed(ActionEvent event)
          /* Declares an object named "src" to represent the event.getSource()
          * method. This shortens the code that follows.
          Object src = event.getSource();
          /* Checks to see if the source of the event which src is representing
          * is a Button and can behave like a Button
          if (src instanceof Button)
     if(src == calNull) calPanel.setText("0");
     if (src == calOne) calPanel.setText("1");
     if(src == calTwo) calPanel.setText("2");
     if(src == calThree) calPanel.setText("3");
     if(src == calFour) calPanel.setText("4");
     if(src == calFive) calPanel.setText("5");
     if(src == calSix) calPanel.setText("6");
     if(src == calSeven) calPanel.setText("7");
     if(src == calEight) calPanel.setText("8");
     if(src == calNine) calPanel.setText("9");
     if(src == calAdd) calPanel.setText("+");
     if(src == calSub) calPanel.setText("-");
     if(src == calMul) calPanel.setText("*");
     if(src == calDev) calPanel.setText("/");
     if(src == calDec) calPanel.setText(".");
     if(src == calEquals) calPanel.setText("=");
     if(src == calClear) calPanel.setText("c");
     if(src == calSqr) calPanel.setText("sqr");
     if(src == calPercent) calPanel.setText("%");
}

Well,
ata the end of init() method add two lines:
doLayout();
validate();

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