Java Exception Stack Trace

Question

Whenever an exception object is created, its constructor is called. This constructor, calls super class constructor to fill in the exception stack trace and then the constructor uses printStackTrace() method to print the stack trace.
This should print the stack trace automatically on the std out.
However, in our exception handling code, unless we specifically use printStackTrace() it does not print stack trace.
What is the reason for this?

Answer 1

Hi,
I am aware that not all Exceptions print stack trace to std out.
I am specifically refering to SQLException. The constructor source code is
public SQLException(String reason) {
     super(reason);
     this.SQLState = null;
     this.vendorCode = 0;
     if (!(this instanceof SQLWarning)) {
     if (DriverManager.getLogWriter() != null) {
          printStackTrace(DriverManager.getLogWriter());
}