Iterating through Map in Salesforce

Iterating through Map in Salesforce

string tempname='';
string tempdesc='';

Map<String,String> mapObj = new Map<String,String>();

For(String tempVarialbe: mapObj.ketset())
{
tempname= tempVarialbe; [To get the KEY VALUE]
tempdesc= mapObj.get(tempVarialbe); [Using Key value to get the corresponding VALUE]
}