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TreeSet class 1

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sensory21

sensory21

Programmer
Jan 27, 2004
79
GB
Hi,

I am using this class for the first time and I am confused as I thought that SortedSet will sort the content of ts but it doesn't?
If I print out ts or orderComplete the content will be in the same order. Any advice available?

TreeSet ts = new TreeSet ();
ts.add (roundPercentage.format(pc));
SortedSet orderComplete = ts;

Thank you
 
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Works for me :

Code: 
TreeSet ts = new TreeSet();
ts.add("ddd");
ts.add("ccc");
ts.add("bbb");
ts.add("aaa");
SortedSet ss = Collections.synchronizedSortedSet(ts);
System.out.println(ss);

--------------------------------------------------
Free Database Connection Pooling Software
 
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Ok, I've tried your method and it effectively works so I guess
I am not using the right method, roundPercentage.format(pc) is inside a while loop and this method doesn't sort all the elements? Am I missing something or should I use another method?

TreeSet ts = new TreeSet ();
ts.add (roundPercentage.format(pc));
SortedSet ss = Collections.synchronizedSortedSet(ts);
out.println(ss);
 
Upvote 0 Downvote
What is "pc" ?
What is "roundPercentage" ?

Some example data would be helpful ...

--------------------------------------------------
Free Database Connection Pooling Software
 
Upvote 0 Downvote
sorry... how can you guess!

DecimalFormat roundPercentage = new DecimalFormat("0");
...
...
Iterator i = items.iterator();
while(i.hasNext()) {
double pc;
int k =0;

Item item = (Item) i.next();
if(item.getNextStage().getStageId() == Stage.DONE) {
pc = 100.0;
}
else {
int done = item.getHistory().size();
int total = item.getItemType().getStages().size();
pc = 100.0 * done / total;
}

TreeSet ts = new TreeSet ();
ts.add (roundPercentage.format(pc));
SortedSet ss = Collections.synchronizedSortedSet(ts);
out.println(ss);

%>

<tr>
<td class=columnwhite><%=roundPercentage.format(pc)%>%</td>
<td class=columnwhite width="75">

</td>
</tr>
<%
}
%>

output:
[36]
[36]
[45]
[45]
[45]
[38]
[72]
[7]
[0]
[24]
[6]
[18]
[64]
[45]
[64]
[64]
[64]
[55]

That list is what I would like to have sorted, actually before the while loop I will need to format the column's title that if we click on it, it does sort the list in ascending or descending order.
 
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Works for me :
Code: 
		TreeSet ts = new TreeSet();
		ts.add(new Integer("15"));
		ts.add(new Integer("5"));
		ts.add(new Integer("25"));
		ts.add(new Integer("20"));
		SortedSet ss = Collections.synchronizedSortedSet(ts);
		System.err.println(ss);

I think you are getting a bit confused with your loops and how you are adding data to your Set.
Try this :

Code: 
DecimalFormat roundPercentage = new DecimalFormat("0");
...
...
TreeSet ts = new TreeSet ();
Iterator i = items.iterator();
while(i.hasNext()) {
    double pc;
    int k  =0;
    
    Item item = (Item) i.next();
    if(item.getNextStage().getStageId() == Stage.DONE) {
        pc = 100.0;
    }
    else {
        int done = item.getHistory().size();
        int total = item.getItemType().getStages().size();
        pc = 100.0 * done / total;
    }

ts.add (roundPercentage.format(pc));
}
%>

SortedSet ss = Collections.synchronizedSortedSet(ts);
out.println(ss);

<%
Iterator ssIt = ss.iterator();
while (ssIt.hasNext()) {
%>
<tr>
<td class=columnwhite><%=ssIt.next()%> %</td>
    <td class=columnwhite width="75"> 
      
    </td>
</tr>
<%
}
%>

--------------------------------------------------
Free Database Connection Pooling Software
 
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Ooops :

Code: 
DecimalFormat roundPercentage = new DecimalFormat("0");
...
...
TreeSet ts = new TreeSet ();
Iterator i = items.iterator();
while(i.hasNext()) {
    double pc;
    int k  =0;
    
    Item item = (Item) i.next();
    if(item.getNextStage().getStageId() == Stage.DONE) {
        pc = 100.0;
    }
    else {
        int done = item.getHistory().size();
        int total = item.getItemType().getStages().size();
        pc = 100.0 * done / total;
    }

ts.add (roundPercentage.format(pc));
}

SortedSet ss = Collections.synchronizedSortedSet(ts);
out.println(ss);

Iterator ssIt = ss.iterator();
while (ssIt.hasNext()) {
%>
<tr>
<td class=columnwhite><%=ssIt.next()%> %</td>
    <td class=columnwhite width="75"> 
      
    </td>
</tr>
<%
}
%>

--------------------------------------------------
Free Database Connection Pooling Software
 
Upvote 0 Downvote
sorry Sedj,

but I didn't leave the other columns as I didn't want to confuse you but I need to stay in the same while loop for the other results like item.get......


<td class=columnwhite><%=item.getItemType().getDescription()%></td>
<td class=columnwhite><%=item.getSystem().getName()%></td>
<td class=columnwhite><%=item.getJtd()%></td>
<td class=columnwhite><%=item.getTag()%></td>
<td class=columnwhite><%=item.getStage().getStageTemplate().getDescription()%></td>
<td class=columnwhite><%=item.getNextStage().getStageTemplate().getDescription()%></td>
<td class=columnwhite><%=roundPercentage.format(pc)%></td>
 
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Will it be possible to have a request at the top of the page and retrieve the sorted order?
 
Upvote 0 Downvote
Look, you are going around this in a mad way.

I take it you have some data, that probably looks something like this :

20% dfsdfsd dfdsfsdf
50% rrgbbhb qqqwesee
35% wwewwww ghghghh
10% retrett ppppppss

and you want to display it like this yeah ?

10% retrett ppppppss
20% dfsdfsd dfdsfsdf
35% wwewwww ghghghh
50% rrgbbhb qqqwesee

Is this what you are trying to achieve ?!


--------------------------------------------------
Free Database Connection Pooling Software
 
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Sorry, just seen your last reply, but yes that's what I want, even a bit more difficult as when I click on the top of the column it should display the contents as you say:
10% retrett ppppppss
20% dfsdfsd dfdsfsdf
35% wwewwww ghghghh
50% rrgbbhb qqqwesee

in ascending or descinding order.

in the meantime I was working on the SortedMap class, I get some results but not quite what I want and that's in the while loop:


while(i.hasNext()) {
double pc;
int k = 0;

Item item = (Item) i.next();
if(item.getNextStage().getStageId() == Stage.DONE) {
pc = 100.0;
k++;
}
else {
int done = item.getHistory().size();
int total = item.getItemType().getStages().size();
pc = 100.0 * done / total;
k++;
}

Map map = new HashMap();
map.put(String.valueOf(k), roundPercentage.format(pc));
SortedMap sortedMap = new TreeMap();
sortedMap.putAll(map);
out.println("SortedMap: " + sortedMap);
%>

the output of this looks like:
SortedMap: {1=91}
SortedMap: {1=91}
SortedMap: {1=36}
SortedMap: {1=91}
SortedMap: {1=25}
SortedMap: {1=38}
SortedMap: {1=38}
SortedMap: {1=0}
SortedMap: {1=12}
SortedMap: {1=38}
SortedMap: {1=25}
SortedMap: {1=25}
SortedMap: {1=25}
SortedMap: {1=38}

so the int k is definitely no good there (should be an object) and the list is not ordered!
 
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OK, hopefully this will clear things up.

Code: 
Iterator i = items.iterator();
Hashtable ht = new Hashtable();
while(i.hasNext()) {
	String html = "";
	html += "<td class=columnwhite>" +item.getItemType().getDescription()+  "</td>";
	html += "<td class=columnwhite>" +item.getSystem().getName()+  "</td>";
	html += "<td class=columnwhite>" +item.getJtd()+  "</td>";
	html += "<td class=columnwhite>" +item.getTag()+  "</td>";
	html += "<td class=columnwhite>" +item.getStage().getStageTemplate().getDescription()+  "</td>";
	html += "<td class=columnwhite>" +item.getNextStage().getStageTemplate().getDescription()+  "</td>";
	html += "<td class=columnwhite>" +roundPercentage.format(pc)+  "</td>";

	ht.put("" +roundPercentage.format(pc), html);
}

SortedMap sortedMap = new TreeMap();
sortedMap.putAll(ht);

Iterator iter = sortedMap.keySet().iterator();
while (iter.hasNext()) {
	Object key = iter.next();
	System.err.println(key +"=" +sortedMap.get(key));
}

--------------------------------------------------
Free Database Connection Pooling Software
 
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Hi,

I would need to add this in the html just before the ht.put:

<td class=columnwhite width="75">
<table width="100%" border="0" cellspacing="0" cellpadding="0" style="border:1px solid #000000;">
<tr>
<% if (pc > 0.00001) {%>
<td width="<%=pc%>%"><img src="images/bargrph_blue.gif" width="100%" height="10"></td>
<%}%>
<% if (pc < 100.00000) {%>
<td bgcolor="#CCCCFF"><img src="images/bargrph_spacer.gif" width="1" height="10"></td>
<%}%>
</tr>
</table>
</td>

can you help me with this?
ps: how do you put your code in the code box please?

thanks
vero
 
Upvote 0 Downvote
Forget about the previous question it's fine now; thanks a lot for your previous help with SortedMap it effectively works unfortunately that's not what I wanted as now
it displays only the table in that sorted order and the other columns don't sort anymore, what I wanted it to collect the order to use it at the top of the column! maybe SortedMap wasn't the way to go, and Im lost!!
 
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