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class Armstrong
{
	public static void main(String[] arg)
	{
	int a,arm=0,n,temp;
	Scanner s=new Scanner(System.in);
	System.out.println("Enter a number");
	n=s.nextInt();
	temp=n;
	for( ;n!=0;n/=10 )
	{
		a=n%10;
		arm=arm+(a*a*a);
	}
	if(arm==temp)
	System.out.println(temp+" is a armstrong number ");
	else
	System.out.println(temp+" is not a armstrong number ");
        }
}

Main.java:6: error: cannot find symbol
	Scanner s=new Scanner(System.in);
	^
  symbol:   class Scanner
  location: class Armstrong
Main.java:6: error: cannot find symbol
	Scanner s=new Scanner(System.in);
	              ^
  symbol:   class Scanner
  location: class Armstrong
2 errors

Standard output is empty