Java exception (Exception) processing and multithreaded startup

1.NumberFormatException exception, the writing process does not show errors, is handled by RuntimeException exception

 Public class Gty {    publicstaticvoid  main (string[] args) {                int a=integer.parseint ("123e");}    }

2. Generate an exception, the following statement does not hold the line

public class Gty {public    static void Main (string[] args) {                System.out.println ("start");         int A=integer.parseint ("123e");        int B=integer.parseint ("O"); Exception (Exception)           System.out.println ("2. Division calculation: "+ (A/b)); An exception is generated and the following statement does not execute        System.out.println ("End");}     }

Operation Result:

3.1 Try....catch Handling exception: "Catch exception", Sequential execution

//Print out statements are displayed in sequence when abnormal //finally{} code must be executed } System.out.println ("End");}}

　　

Operation Result:

3.2 Try....catch Handling Exception: System comes with Printstacktrace () method to deal with exceptions, the principle of multithreading

//system provided, the display position is uncertain (multithreading principle);} finally {System.out.println ("code that will execute");//finally{} code must execute}SYSTEM.OUT.PRINTLN ("End");}}

　

Run result (a):

　

Operation Result (b):

4. How to start multi-threaded

Anonymous methods and anonymous content classes                } catch (Interruptedexception e) {//TODO auto-generated catch Blocke.printstacktrace ();} System.out.println ("in Progress");}). Start ();

　　

Java exception (Exception) processing and multithreaded startup