Welcome to the Java Programming Forums


The professional, friendly Java community. 21,500 members and growing!


The Java Programming Forums are a community of Java programmers from all around the World. Our members have a wide range of skills and they all have one thing in common: A passion to learn and code Java. We invite beginner Java programmers right through to Java professionals to post here and share your knowledge. Become a part of the community, help others, expand your knowledge of Java and enjoy talking with like minded people. Registration is quick and best of all free. We look forward to meeting you.


>> REGISTER NOW TO START POSTING


Members have full access to the forums. Advertisements are removed for registered users.

Results 1 to 5 of 5

Thread: Null or not an object error

  1. #1
    Junior Member
    Join Date
    Oct 2011
    Posts
    2
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Default Null or not an object error

    I write online help and a customer has asked for a customised frameset template with search functionality available in a toolbar. The authoring software I use does part of the work for me, creating a file dhtml_search.js which includes an array containing all of the words used in the help and two functions to display a search field and another to display results in a right-hand frame.

    My problem is that I when a user clicks a search result, I want the topics text to display in the same frame as the results but it doesn't.

    I get an error that I can't fix.


    Page=new Array();Page[0]=new Array("The quick brown fox jumps over the lazy dog","4467.htm");
    var PageCount=1;

    function search(SearchWord){

    var The_form="";

    The_form='<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">\n';
    The_form+="<html>\n";
    The_form+="<head>\n";
    The_form+="<meta http-equiv='Content-Type' content='text/html; charset=UTF-8'>\n";
    The_form+="<title>Search Results</title>\n";
    The_form+='<script language="javascript" type="text/javascript" charset="UTF-8" src="dhtml_search.js"></script>\n';
    The_form+='<link rel="stylesheet" type="text/css" href="stylesheet.css">\n';
    The_form+="<style type='text/css'>\n";
    The_form+=".searchDetails {font-family:tahoma; background-color:white; font-size:7pt; font-weight:normal}\n";
    The_form+=".searchResults {font-family:tahoma; font-size:8pt}\n";
    The_form+="</style>\n";
    The_form+="</head>\n";
    The_form+="<body onload='javascript:document.SearchForm.SearchText. focus()'>\n";
    The_form+='<table class="searchDetails" border="0" cellspacing="0" cellpadding="2" width="100%">\n';
    The_form+='<tr><td></td></tr>';
    The_form+='<tr><td>';
    The_form+='<form name="SearchForm" action="javascript:show_results(document.SearchFor m.SearchText.value)">';
    The_form+='<input type="text" name="SearchText" size="25" value="' + SearchWord + '" />';
    The_form+='&nbsp;<input type="image" src="./search.gif" value="Submit" alt="Submit"/></form>'
    The_form+='</td></tr></table>\n';
    The_form+="</body></html>";


    this.status="";
    this.document.open();
    this.document.write(The_form);
    this.document.close();


    }

    function show_results(SearchWord) {
    var Result="";
    var NrRes=0;


    if(SearchWord.length>=1){
    while(SearchWord.indexOf("<")>-1 || SearchWord.indexOf(">")>-1 || SearchWord.indexOf('"')>-1){
    SearchWord=SearchWord.replace("<","&lt;").replace( ">","&gt;").replace('"',"&quot;");
    }
    }

    if(SearchWord.length>=1){
    SearchWord=SearchWord.toLowerCase();
    this.status="Searching, please wait...";
    Result+="<table border='0' cellpadding='5' class='searchResults' width='100%'>";
    for(j=0;j<PageCount;j++){
    k=Page[j].length-1;
    for(i=0;i<k;i++){
    WordPos=Page[j][i].toLowerCase().indexOf(SearchWord);
    if(WordPos>-1){
    FoundWord=Page[j][i].substr(WordPos,SearchWord.length);
    NrRes++;
    Result+="<tr><td>";
    Result+="<a href='"+Page[j][k]+"'>"+Page[j][k-1].replace(FoundWord,FoundWord.bold())+"</a><br/>\n";

    if(i<k-1){
    if(Page[j][i].length>350){
    Result+="..."+Page[j][i].substr(WordPos-100,200+FoundWord.length).replace(FoundWord,FoundW ord.bold())+"...\n";
    }
    else{
    Result+=Page[j][i].replace(FoundWord,FoundWord.bold())+"\n";
    }
    }
    Result+="</td></tr>";
    break;
    }
    }
    }
    Result+="</table>";
    Result+="<p class='searchDetails'>&nbsp;" + NrRes + " Resultat(en) gefunden.</p>";
    }

    var all_content = "<iframe name='BODY' id='myIframe' style='width:100%; height:100%' scrolling='auto' marginwidth='5' marginheight='0' frameborder='0'></iframe>";
    var myDiv = window.top.body_right;

    myDiv.innerHTML = all_content;

    var x=window.top.document.getElementById("myIframe");
    var y=x.contentDocument;
    y.BODY.innerHTML=Result;
    }


  2. #2
    Member
    Join Date
    Oct 2011
    Posts
    50
    My Mood
    Fine
    Thanks
    2
    Thanked 1 Time in 1 Post

    Default Re: Null or not an object error

    Please post your code using
    [ CODE ] <your code> [ /CODE ] or [highlight=java] <your code> [/highlight]

    There are small chances that one will bother reading quite a long code which is badly formatted. Is just an advice.

    application context
    Last edited by daniel.j2ee; December 13th, 2011 at 04:56 PM.

  3. #3
    Member
    Join Date
    Mar 2011
    Posts
    198
    My Mood
    Daring
    Thanks
    7
    Thanked 4 Times in 4 Posts

    Default Re: Null or not an object error

    here is his code:

    Page=new Array();Page[0]=new Array("The quick brown fox jumps over the lazy dog","4467.htm");
    var PageCount=1;
     
    function search(SearchWord){
     
    var The_form="";
     
    The_form='<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">\n';
    The_form+="<html>\n";
    The_form+="<head>\n";
    The_form+="<meta http-equiv='Content-Type' content='text/html; charset=UTF-8'>\n";
    The_form+="<title>Search Results</title>\n";
    The_form+='<script language="javascript" type="text/javascript" charset="UTF-8" src="dhtml_search.js"></script>\n';
    The_form+='<link rel="stylesheet" type="text/css" href="stylesheet.css">\n';
    The_form+="<style type='text/css'>\n";
    The_form+=".searchDetails {font-family:tahoma; background-color:white; font-size:7pt; font-weight:normal}\n";
    The_form+=".searchResults {font-family:tahoma; font-size:8pt}\n";
    The_form+="</style>\n";
    The_form+="</head>\n";
    The_form+="<body onload='javascript:document.SearchForm.SearchText. focus()'>\n";
    The_form+='<table class="searchDetails" border="0" cellspacing="0" cellpadding="2" width="100%">\n';
    The_form+='<tr><td></td></tr>';
    The_form+='<tr><td>';
    The_form+='<form name="SearchForm" action="javascript:show_results(document.SearchFor m.SearchText.value)">';
    The_form+='<input type="text" name="SearchText" size="25" value="' + SearchWord + '" />';
    The_form+='&nbsp;<input type="image" src="./search.gif" value="Submit" alt="Submit"/></form>'
    The_form+='</td></tr></table>\n';
    The_form+="</body></html>";
     
     
    this.status="";
    this.document.open();
    this.document.write(The_form);
    this.document.close();
     
     
    }
     
    function show_results(SearchWord) {
    var Result="";
    var NrRes=0;
     
     
    if(SearchWord.length>=1){
    while(SearchWord.indexOf("<")>-1 || SearchWord.indexOf(">")>-1 || SearchWord.indexOf('"')>-1){
    SearchWord=SearchWord.replace("<","&lt;").replace( ">","&gt;").replace('"',"&quot;");
    }
    }
     
    if(SearchWord.length>=1){
    SearchWord=SearchWord.toLowerCase();
    this.status="Searching, please wait...";
    Result+="<table border='0' cellpadding='5' class='searchResults' width='100%'>";
    for(j=0;j<PageCount;j++){
    k=Page[j].length-1;
    for(i=0;i<k;i++){
    WordPos=Page[j][i].toLowerCase().indexOf(SearchWord);
    if(WordPos>-1){
    FoundWord=Page[j][i].substr(WordPos,SearchWord.length);
    NrRes++;
    Result+="<tr><td>";
    Result+="<a href='"+Page[j][k]+"'>"+Page[j][k-1].replace(FoundWord,FoundWord.bold())+"</a><br/>\n";
     
    if(i<k-1){
    if(Page[j][i].length>350){
    Result+="..."+Page[j][i].substr(WordPos-100,200+FoundWord.length).replace(FoundWord,FoundW ord.bold())+"...\n";
    }
    else{
    Result+=Page[j][i].replace(FoundWord,FoundWord.bold())+"\n";
    }
    }
    Result+="</td></tr>";
    break;
    }
    }
    }
    Result+="</table>";
    Result+="<p class='searchDetails'>&nbsp;" + NrRes + " Resultat(en) gefunden.</p>";
    }
     
    var all_content = "<iframe name='BODY' id='myIframe' style='width:100%; height:100%' scrolling='auto' marginwidth='5' marginheight='0' frameborder='0'></iframe>";
    var myDiv = window.top.body_right;
     
    myDiv.innerHTML = all_content;
     
    var x=window.top.document.getElementById("myIframe");
    var y=x.contentDocument;
    y.BODY.innerHTML=Result;
    }

    hmm is this even java? lol

  4. #4
    Administrator copeg's Avatar
    Join Date
    Oct 2009
    Location
    US
    Posts
    5,358
    Thanks
    182
    Thanked 834 Times in 777 Posts
    Blog Entries
    5

    Default Re: Null or not an object error

    javascript != java, and these are java forums. You might have better luck on a javascript dedicated forum.

  5. #5
    Junior Member
    Join Date
    Oct 2011
    Posts
    2
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Default Re: Null or not an object error

    In my defence, it is not my code. It is splurted out by the authoring software.

    Sorry for wasting your time.

Similar Threads

  1. NULL POINTER EXCEPTION error
    By beefwithrice in forum What's Wrong With My Code?
    Replies: 2
    Last Post: October 28th, 2011, 07:26 AM
  2. Array of strings Null Pointer error
    By FredrichGauss in forum What's Wrong With My Code?
    Replies: 1
    Last Post: April 3rd, 2011, 01:43 AM
  3. [SOLVED] Error: Null Exception on Array of classes
    By g000we in forum What's Wrong With My Code?
    Replies: 2
    Last Post: November 15th, 2010, 09:14 AM
  4. How do you set an object in array to null value?
    By Arius in forum What's Wrong With My Code?
    Replies: 5
    Last Post: January 25th, 2010, 03:50 AM
  5. JComboBox null pointer Exception error
    By F_Arches in forum AWT / Java Swing
    Replies: 2
    Last Post: November 29th, 2009, 02:32 PM