I need help!

**fg5** · 11-14-2004 02:20 PM

hi
I got 2 questions. 1st, how can I just make the first row and first column are in red font. I don't know what type should I declare the clr. can anyone show me?

2nd. how about randomly place an input field in one of the cells ?
int rndRow = Interger.ParseInt(Math.round(Math.random() * i));
this line give me an error said that "Method ParseInt(double) not found in class java.lang.Integer." what error did I make?

PHP Code:


for (int i =1; i<= M; i++ ) 

     { 

        

        if(i == 1) {clr = "#ff0000";} // make the first row in color red

       else {clr = "#000000";} 



         

        out.println("<tr>");     

     

        for (int j =1; j<= N; j++ ) 

        { 

            int rndRow = Interger.ParseInt(Math.round(Math.random() * i)); // randomly put input field

            int rndCol = Interger.ParseInt(Math.round(Math.random() * j)); //randomly put input field





            if(j == 1) {clr = "#ff0000";} // make the first col in color red



        else {clr = "#000000";} 

            if(i==rndRow && j==rndCol) { 

         out.println("<td><input name=randomInputHere></td>"); 

          } 

          else { 



            out.println("<th WIDTH= "); 

            out.print(40); 

             out.print(">"); 

             

            out.println(j * i); 

             

        out.println("</th>"); 

        

        } 

       } 

          out.println("</tr>");

randomly put input field Method ParseInt(double) not found in class java.lang.Integer.

**ray326** · 11-14-2004 04:33 PM

First off, you shouldn't be emitting HTML from Java; that's what JSPs are for. In a style you put .red { color:#f00 } then in the JSP you can use

Code:

<tr>
<% if (i==1) { %>
<td class="red">
<% } else { %>
<td>
<% } %>
Do your td thing</td>
</tr>

(Actually, the first row should probably be appropriately styled header cells.)

So when the compiler complained about ParseInt(double) did you check the API docs to see why?

Code:

static int parseInt(String s)
          Parses the string argument as a signed decimal integer.

**fg5** · 11-15-2004 02:16 AM

I don't quite get this. you mean that I need use CCS in JSP file?

can you show me an example?

PHP Code:


<tr>

<% if (i==1) { %>

<td class="red">

<% } else { %>

<td>

<% } %>

Do your td thing</td>

</tr>

**ray326** · 11-15-2004 12:07 PM

Of the CSS? Here's an imbedded style sheet (goes in the head of the document).

Code:

...
<head>
...
<style type="text/css">
.red { color: #f00 }
</style>
...
</head>

**fg5** · 11-15-2004 10:04 PM

I try it but it's not work. I don't know why!!

**yerenkow** · 11-16-2004 09:43 AM

int rndRow = Interger.ParseInt(Math.round(Math.random() * i));

should be

int rndRow = (int) Math.round(Math.random() * i);

I don't see in your code nowhere printing the clr

should be

if(i>1){
if(j == 1) {
clr = "#ff0000";
}
else {clr = "#000000";}
}
if(i==rndRow && j==rndCol) {
out.println("<td style=\"color: "+ clr +";\"><input name=randomInputHere></td>");
}

**fg5** · 11-16-2004 02:57 PM

thanks yerenkow
I solve those 2 questions. but for second question I just want to only one input feild, but it give me multiple input field. also it's messd up with my table cuz the input take one cell and others will shif to right in that row. how can I solve this?

PHP Code:




 for (int i =1; i<= M; i++ ) 

     {

        out.println("<tr>");    

     

     

        for (int j =1; j<= N; j++ )

        {

           

        int rndRow = (int) Math.round(Math.random() * i);

                int rndCol = (int) Math.round(Math.random() * j);

            if(i==rndRow && j==rndCol) { 

            out.println("<td><input name=randomInputHere size = 1></td>"); 

        }

            out.println("<th WIDTH= ");

            out.print(40);

             out.print(">");

            if(i==1)

            {

            out.println("<font color=red>");

            out.println(j * i);

            }

            else

        if(j==1)

            {

            out.println("<font color=red>");

            out.println(j * i);

            }    

            else

            {

            out.println("<font color=black>");

            out.println(j * i);

        }

            

        }   

        out.println("</th>");

       

        }

       

          out.println("</tr>");

**yerenkow** · 11-16-2004 03:35 PM

you need to initialize your place of random input only once, so change this

for (int i =1; i<= M; i++ )
{
out.println("<tr>");

for (int j =1; j<= N; j++ )
{

int rndRow = (int) Math.round(Math.random() * i);
int rndCol = (int) Math.round(Math.random() * j);

to

int rndRow = (int) Math.round(Math.random() * i);
int rndCol = (int) Math.round(Math.random() * j);
for (int i =1; i<= M; i++ )
{
out.println("<tr>");

for (int j =1; j<= N; j++ )
{

that must solve your first problem

to make all td same width you must specify width in each one, minimum in forst row, and a summar width in table tag.

And, your input must have width lesser than td.

**fg5** · 11-16-2004 03:52 PM

well, I use the following code to get row and col input from user. so how do I initialize j and i?
also I just want to the input field take 1 cell. let's say the row number from 1 to 10 then the input table take the seventh cell. but the totally cell should be equal to 10 (1 2 3 4 5 6 input field 8 9 10)

PHP Code:


String m1 = request.getParameter("mName") ;

     m1 = m1.trim();

     int M = Integer.parseInt(m1);



     String n1 = request.getParameter("nName") ;

     n1 = n1.trim();

     int N = Integer.parseInt(n1);

**yerenkow** · 11-16-2004 03:55 PM

Sorry, it's late and I'm sleepy

NOT

int rndRow = (int) Math.round(Math.random() * i);
int rndCol = (int) Math.round(Math.random() * j);
for (int i =1; i<= M; i++ )
{
out.println("<tr>");

for (int j =1; j<= N; j++ )
{

BUT

int rndRow = (int) Math.round(Math.random() * M);
int rndCol = (int) Math.round(Math.random() * N);
for (int i =1; i<= M; i++ )
{
out.println("<tr>");

for (int j =1; j<= N; j++ )
{

**fg5** · 11-16-2004 04:27 PM

thanks man. sorry for delay your sleeping. I fixe the multiple input field.
another question. I just want to the input field take 1 cell. let's say the row number from 1 to 10 and the input table take the seventh cell. but the totally cell should be equal to 10 (1 2 3 4 5 6 input field 8 9 10)
I know that I need add something under this line of code, so the the table creation will ignore the cell that the input field take. but I don't know how

if(i==rndRow && j==rndCol) {
out.println("<td><input name=randomInputHere size = 1></td>");
}

**yerenkow** · 11-16-2004 04:37 PM

int rndRow = (int) Math.round(Math.random() * M);
int rndCol = (int) Math.round(Math.random() * N);

out.println("<table width='"+(N*100)+"' >");
for (int i =1; i<= M; i++ )
{
out.println("<tr>");

for (int j =1; j<= N; j++ )
{
if(i==rndRow && j==rndCol)
{
out.println("<td width='100'><input name='yrName' type='text' width='80' ></td>");
} else {

out.println("<td width='100'>");
if(i==1 || j==1)
{
out.println("<font color=red>");
out.println(j * i);
out.println("</font>");
} else {
out.println(j * i);
}
out.println("</td>);
}
}
out.println("</tr>");
}
out.println("</table>");

**fg5** · 11-16-2004 05:41 PM

well, it's work. thanks so much.
last question
I want to input the cell number in the input field that I create. e.g. the #34 cell is taken by input field. I want to type 34 in it. if the number that I put is correct, then a pop up window will show up. I wrote the following in javascript, but it's not work

PHP Code:


z=document.getElementById(2).value

z=parseInt(z)

c=i*j

if (z == (i*j) )

    {    alert("The answer is "+i+ " * "+j+"  = "  + z + ".   You are right.)

          }



for (int j =1; j<= N; j++ )

        {

            if(i==rndRow && j==rndCol) 

                

                { 

        out.println("<th width='40'><input name='number' type='text' size=1 id = 2 value=''></th>"); 

        }

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