JAVA CODE

//Ex8_10 program
import java.applet.Applet;
import java.awt.*;

public class Ex8_10 extends Applet
{
  public void paint( Graphics g )
  {
    
      double sum = 1, i=1; 
      while ( 1/i > 0.0001)
      {
        i++;
        if(i%2 == 0)
           sum = sum - 1.0/i;
        else  
           sum = sum + 1.0/i;
      }
       g.drawString(" 1 - 1/2 + 1/3 - 1/4... = " + sum, 50, 100 );
   }  
}