How do I generate an array with the output of 1,0,0,0,0.....?

Your code as you pasted it cannot compile,
a= 1/(1+i);
cannot work through compiler array cnnot be assihgned to integere or rather
integere to the arrai

Even if you type it proably wwhta you meant
a[i]=1/(1+i)
you'll get 1 for the first element
a[0] = 1/1;
but 
a[1] = 1/2;
and when you assign to int you get truncation of the
decimal part, so it wioll 
a[1] = 0;

and all of the rest the same

Select allOpen in new window

In order to print something sensible
you need to declare array a as float

{ 
public static void main(String[] args)
{


float a[] = new int[24];
for(int i = 0; i<24;i++)
{
a[i] =1.0f/(1.0f+i);
System.out.println(a[i]);
}
}
}

Select allOpen in new window

This will give you reasonable numbers
(in addition you also had
System.out.println(0) in your original code
instead of

System.out.println(a[i]);)

Select allOpen in new window

Actually this is correct code
(forgot to chang int to float in array declaration)

{ 
public static void main(String[] args)
{


float a[] = new float[24];
for(int i = 0; i<24;i++)
{
a[i] =1.0f/(1.0f+i);
System.out.println(a[i]);
}
}
}

Select allOpen in new window