Java开发 - 异常 - 抛出异常

public class ThrowDemo {
static void demoproc() {
try {
throw new NullPointerException("demo");
} catch (NullPointerException e) {
System.out.println("Caught inside demoproc.");
throw e; // rethrow the exception
}
}

public static void main(String args[]) {
try {
demoproc();
} catch (NullPointerException e) {
System.out.println("Recaught: " + e);
}
}
}