[Solved] java servlet programming error [closed]

[ad_1] Need to put the servlet.jar in your CLASSPATH when you compile. The servlet.jar is part of Tomcat. You’ll probably find it in servlet/lib on version 5.5. You should know how to use -classpath option on javac.exe. You’ll probably find that there are other JARs missing as well. As you get compilation errors, keep finding … Read more

[Solved] how to remove the space between the two triangle?

[ad_1] In the first for loop. Do not put i <= n but i < n and the space will dissapear. Try to figure out yourself why this is. Correctly formatted (also removed the input scanner line). public class series { public static void main (String args[]){ int n=5; if((n>=1 && n<=9)){ for(int i=0;i<n;i++){ //spacing … Read more

[Solved] How to create a Sports Bet Calculator using javascript

[ad_1] Revised first version 🙂 const bt_Nwline = document.getElementById(‘New-Line’) , xForm = document.getElementById(‘form-X’) , wTable = xForm.querySelector(‘table’) , baseLine = wTable.querySelector(‘thead tr:nth-of-type(3)’) , tBody = wTable.querySelector(‘tbody’) , tPayout = wTable.querySelector(‘tfoot td:nth-of-type(2)’) ; xForm.onsubmit = e=>e.preventDefault() // disable form submit ; xForm.onreset =_=>{ tPayout.textContent=”0.00″ } ; function betCalculator() { let bet = xForm.betAmount.valueAsNumber || 0 , … Read more

[Solved] First time to query 3 mysql tables [closed]

[ad_1] You have to use 2 joins to link these 3 tables. INNER JOIN means, that only those tuples are listed, for which an correct tuple exists in every table. Students without subjects or wrong subject_ids will not be listed. Keep in mind, that an student, which visits X subjects will also listed X times. … Read more

[Solved] How can show unlimited parent-child & sub-child tree data in laravel

[ad_1] you need to fetch all the products in one query and then process them to build the tree. You cant eager load it the traditional way. Original solution from Formatink public function products($projectId) { $products= Product::where(‘project_id’, $projectId)->get(); $products_by_id = collect(); foreach ($products as $product) { $products_by_id->put($product->id, $product); } foreach ($products as $key => $product) … Read more

[Solved] How to rename last letter but not the file ending in python [duplicate]

[ad_1] Do something like this >>> import os >>> for root, subFolders, files in os.walk(‘/tmp’): … for f in files: … if len(f) < 5: continue … newf = f[:-5]+f[-5].lower()+f[-4:] … print “changing”,f,”to”,newf … but looks like you want character before extension instead of 5 char? in that case why not just split the extension … Read more

[Solved] How can obtain age by birth date [closed]

[ad_1] Using unix timestamps to handle birthdates is a bad idea, as their range is only very limited (1970-2038). Use php’s builtin DateTime class instead: $then = DateTime::createFromFormat(“Y/m/d”, “2011/12/16”); $diff = $then->diff(new DateTime()); echo $diff->format(“%y year %m month %d day\n”); [ad_2] solved How can obtain age by birth date [closed]