i want 2 knw how to generate random number using vf and controller plz can anyone suggest me syntax r ping some code advance thanks 2 all

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thank u in Advance

Can I Write Geographical Location program B/w 2 areas using VF Page Can anyone help me  

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How To Convert String From Lowercase To Uppercase In VF Page
once check My Code Find Out Mistake And Give Me Solution
Apex Code:public with sharing class ChangeController1 {
    string mystring;
    public PageReference change() {
    getValue();
    return null;
    }    
     //public String upper { get; set; }

    //public String lower { get; set; }

    //public String value { set; }
   
   
    public String setValue(string v){
    mystring=v;
    return null;
    }
   
    public String getValue(){
   
    mystring.touppercase();
    return null;
    }
}
public with sharing class ChangeController1 {
    string mystring;
    public PageReference change() {
    getValue();
    return null;
    }    
     //public String upper { get; set; }

    //public String lower { get; set; }

    //public String value { set; }
   
   
    public String setValue(string v){
    mystring=v;
    return null;
    }
   
    public String getValue(){
   
    mystring.touppercase();
    return null;
    }
}
public with sharing class ChangeController1 {
    string mystring;
    public PageReference change() {
    getValue();
    return null;
    }    
     //public String upper { get; set; }

    //public String lower { get; set; }

    //public String value { set; }
   
   
    public String setValue(string v){
    mystring=v;
    return null;
    }
   
    public String getValue(){
   
    mystring.touppercase();
    return null;
    }
}public with sharing class ChangeController1 {
    string mystring;
    public PageReference change() {
    getValue();
    return null;
    }    
     //public String upper { get; set; }

    //public String lower { get; set; }

    //public String value { set; }
   
   
    public String setValue(string v){
    mystring=v;
    return null;
    }
   
    public String getValue(){
   
    mystring.touppercase();
    return null;
    }
}
Vf Page:
<apex:page controller="ChangeController1">
<apex:form >
Value <apex:inputText value="{!value}"/><br/>
lower<apex:outputText /><br/>
upper<apex:outputText /><br/>


<!--Lower <apex:inputText value="{!lower}"/><br/>
Upper <apex:inputText value="{!upper}"/>-->
<apex:commandButton action="{!change}" value="Change"/>
</apex:form>
</apex:page>

How To Convert String Lowercase to Uppercase In Vf page

How To Fetch Records Using DataLoader?

Can I Write Geographical Location program B/w 2 areas using VF Page Can anyone help me  

How To Convert String From Lowercase To Uppercase In VF Page
once check My Code Find Out Mistake And Give Me Solution
Apex Code:public with sharing class ChangeController1 {
    string mystring;
    public PageReference change() {
    getValue();
    return null;
    }    
     //public String upper { get; set; }

    //public String lower { get; set; }

    //public String value { set; }
   
   
    public String setValue(string v){
    mystring=v;
    return null;
    }
   
    public String getValue(){
   
    mystring.touppercase();
    return null;
    }
}
public with sharing class ChangeController1 {
    string mystring;
    public PageReference change() {
    getValue();
    return null;
    }    
     //public String upper { get; set; }

    //public String lower { get; set; }

    //public String value { set; }
   
   
    public String setValue(string v){
    mystring=v;
    return null;
    }
   
    public String getValue(){
   
    mystring.touppercase();
    return null;
    }
}
public with sharing class ChangeController1 {
    string mystring;
    public PageReference change() {
    getValue();
    return null;
    }    
     //public String upper { get; set; }

    //public String lower { get; set; }

    //public String value { set; }
   
   
    public String setValue(string v){
    mystring=v;
    return null;
    }
   
    public String getValue(){
   
    mystring.touppercase();
    return null;
    }
}public with sharing class ChangeController1 {
    string mystring;
    public PageReference change() {
    getValue();
    return null;
    }    
     //public String upper { get; set; }

    //public String lower { get; set; }

    //public String value { set; }
   
   
    public String setValue(string v){
    mystring=v;
    return null;
    }
   
    public String getValue(){
   
    mystring.touppercase();
    return null;
    }
}
Vf Page:
<apex:page controller="ChangeController1">
<apex:form >
Value <apex:inputText value="{!value}"/><br/>
lower<apex:outputText /><br/>
upper<apex:outputText /><br/>


<!--Lower <apex:inputText value="{!lower}"/><br/>
Upper <apex:inputText value="{!upper}"/>-->
<apex:commandButton action="{!change}" value="Change"/>
</apex:form>
</apex:page>