How do you synchronize java?

[Luis-Fernando]

Hi,
I am working on java project in my company. While working on project yesterday our team leader asked me How do you synchronize java? I am not able to explain exactly how it works that's why I decided to taking your help. If you have any idea about this please help me.
Thank you.

[Zecho]

The java programming language supports two basic process one is synchronize method and other one is synchronize statement. If you want to make synchronize method just add synchronized keyword to it.

Following is the example of it.

 public class SynchronizedMethod
         {
        private int p = 0;

        public synchronized void incre() {
            p++;
        }

        public synchronized void decre() {
            p--;
        }

        public synchronized int value() {
            return p;
        }
    }

[Reegan]

synchronize is a type of command-line utility for doing one-way directory or for performing file synchronization. If source is match with the target then target is modified.synchronize process runs on any other Operating System if there is Java Runtime Environment. synchronize is free software that made from java.

[opaper]

Two threads must not executed synchronized method simultaneously.

like following example:
synchronized ( Object1 )
{
/* Some important code */
}

Example of synchronized instance method:

synchronized doityourself()
{
/*Some important code */
}

Example of synchronized syntactic shorthand:

doityourself()
{
synchronized( this )
{
/* Some important code */
}
}


Example of protecting static variables
synchronized ( getClassdata() )
{
/*Some important code */
}

[MindSpace]

Synchronized Class Method:

class class1{
   static synchronized type MN1() {
      statement b
   }
}

Synchronized Instance Method:
[code]

class class2 {
synchronized type MN2() {
statement b
}
}




Synchronized Statement:

class class3 {
   type MN3() {
      synchronized (obj1) {
         statement b
      }
   }
}

[Modifier]

Example of synchronize Methods :

public class synchronizeMethods
{
   public synchronized void IM1 ()
   {
      important  code.
   }

   public synchronized void IM2 ()
   {
     important  code.
   }

   public static synchronized void CM ()
   {
      important  code.
   }
}

public class synchronizeStatements
{
   public void instanceMethod1 ()
   {
      //  code for setup

      synchronized (this)
      {
         // Update your file.
      }

      // code for cleanup.
   }

   public void IM2 ()
   {
      // code for setup

      synchronized (this)
      {
         // Read from this file.
      }

      // code for cleanup.
   }
}