1)

• Single-threaded Apartments-Single-threaded apartments consist of exactly one thread, so all COM objects that live in a single-threaded apartment can receive method calls only from the one thread that belongs to that apartment. All method calls to a COM object in a single-threaded apartment are synchronized with the windows message queue for the single-threaded apartment's thread. A process with a single thread of execution is simply a special case of this model.

• Multithreaded Apartments-Multithreaded apartments consist of one or more threads, so all COM objects that live in an multithreaded apartment can receive method calls directly from any of the threads that belong to the multithreaded apartment. Threads in a multithreaded apartment use a model called free-threading. Calls to COM objects in a multithreaded apartment are synchronized by the objects themselves."

Java Multithreading

2)

Applet Example

3)

Thread Synchronization1

Thread Synchronization2

4)Check Number

import java.util.*;
class Check 
{   
    public static void main(String[] args) throws Exception
    {
        Scanner input=new Scanner(System.in);
        System.out.print("Enter a number: ");
        int num=input.nextInt();
        if(num%2==0){
            System.out.println(num+" is even");
        }
        else{
            throw new Exception("Number is odd");
    }
    }
}

5)

States Of Thread

10)

import java.util.*;
class AcceptString 
{
    public static void main(String[] args) throws Exception
    {
        Scanner input=new Scanner(System.in);
        System.out.print("Enter String1: ");
        String st1=input.nextLine();
        System.out.print("Enter String2: ");
        String st2=input.nextLine();
        if(st1.equalsIgnoreCase(st2)){
            System.out.println("Strings are same!");
        }
        else{
            throw new Exception("String are not equal!");
        }       
    }
}

Exception Handling

Applet Tutorials