How to kill a thread in JAVA ??

Ans:

'Killing a thread' is not the right phrase to use. Here is one way we can implement graceful exit of the thread:

class TaskThread implements Runnable {

    boolean shouldStop;

    public TaskThread(boolean shouldStop) {
        this.shouldStop = shouldStop;
    }

    @Override
    public void run() {

        System.out.println("Thread has started");

        while (!shouldStop) {
            // do something
        }

        System.out.println("Thread has ended");

    }
public void stop() {
        shouldStop = true;
    }


}
public class ThreadStop
{
public static void main(String[] args)
{
System.out.println("Start");

// Start the thread
TaskThread task = new TaskThread(false);
Thread t = new Thread(task);
t.start();

  // Stop the thread
task.stop();

  System.out.println("End");

}
}

JAVA StringBuffer and StringBuilder object conversion to String

We can convert a StringBuffer or StringBuilder object  to String by using toString() method of Object class.

StringConversion.java

class StringConversion

{

          public static void main(String[] args)

          {

                   StringBuffer sb1=new StringBuffer("Silan");

                   StringBuilder sb2=new StringBuilder("Technology");

                   String s1=sb1.toString();

                   String s2=sb2.toString();

                   System.out.println(s1+" "+s2);

          }

}

Output:
Silan Technology

StringConversion1.java

class StringConversion1

{

          public static void main(String[] args)

          {

                   StringBuffer sb1=new StringBuffer("Silan");

                   StringBuffer sb2=new StringBuffer("Silan");

                   String s1=sb1.toString();

                   String s2=sb2.toString();

                   if(s1.equals(s2))

                   {

                             System.out.println("s1 and s2 contents are equal");

                   }

                   else

                   {

                             System.out.println("s1 and s2 contents are not equal");

                   }

          }

}

Output:
s1 and s2 contents are equal