exception handling, creating log and continue the program in JAVA

Question

I am designing a program in JAVA that captures results in about 10 iterations. At the end of these iterations all the results must be written into a log file.

If any ex

Answer 1

OutputStream os = ....;
PrintStream  ps = new PrintStream(os);

while(notDone) {
    try {
        doStuff();
    }
    catch(Throwable t) {
        t.printStackTrace(ps);
    }
    ps.print(results);
}

Answer 2

the case is, in this kind of a question, you should better provide us a sample code, then only we can identify the problem without any issue.

If you just need to view the error, then "e.printStackTrace" will help you. The "e" is an instance of class "Exception".

However, if you need to LOG, then "Logger" class will help you, with Exception class.For an example,

try {
                    f = location.createNewFile();
                } catch (IOException ex) {
                    Logger.getLogger(TestForm.class.getName()).log(Level.SEVERE, null, ex);
                }

To do all of these, it is better to surround your code with try catch block

Answer 3

You're looking for the try-catch block. See, for example, this tutorial.