Hi,
Avoid concatenating several strings toguether using += (+) instead use
StringBuffer.append method. This is just an advice to speed up SERVLETS ...
also avoid unnecessary creation of objects ( NEW ) specially when processing
requests because JVMs can allocate in the heap JUST ONE OBJECT at the
time!!!
// What I have been doing earlier
String sqlQuery=null;
// a very complex select created dynamically based on user selected options
sqlQuery+="SELECT ...."
...// LOT OF sqlQuery+=""
the code above when run turns in:
sqlQuery = new StringBuffer().append("SELECT ....").toString();
sqlQuery = new StringBuffer(sqlQuery).append(" ....").toString();
// allocating one StringBuffer in the heap for each
concatenation!!!!!!!!!!!!
Instead create just one StringBuffer:
// What I do after I finish reading "JAVA SERVLET PROGRAMMING"
StringBuffer sqlQuery= new StringBuffer();
String result=null;
sqlQuery.append(" SELECT ....");
sqlQuery.append(" ....");
result= sqlQuery.toString();
I FOUND THE TIP IN THE O'Reilly "JAVA SERVLET PROGRAMMING" a great book (if
not the best) to get started with servlets...
Giovanni Az�a Garc�a.
Bachelor in Computer Science.
Banking and Economic Information Center
e-mail: [EMAIL PROTECTED]
ICQ# 20725388
Giovanni Az�a Garc�a.
Bachelor in Computer Science.
Banking and Economic Information Center
e-mail: [EMAIL PROTECTED]
ICQ# 20725388
Giovanni Az�a Garc�a.
Bachelor in Computer Science.
Banking and Economic Information Center
e-mail: [EMAIL PROTECTED]
ICQ# 20725388
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