Java Error Handling

Handling Errors Gracefully

Production code must handle failures: network timeouts, invalid input, missing files, and division by zero. Java provides constructs to catch and recover from errors.

try {
  int x = 10 / 0;
} catch (ArithmeticException e) {
  System.err.println(e.getMessage());
}

• Fail fast on programmer errors (bugs)
• Catch and log expected failures (I/O, network)
• Return meaningful error messages to users
• Never swallow errors silently