Hi Friend,

1)
class OddNumbers{
public static void main (String args[]){
String oddNo = "";
for (int i = 1; i <=50; i++){
if (i % 2 != 0) {
oddNo += i + " ";
}
}
System.out.println("Odd Numbers between 1 to 50 are: "+oddNo);
}
}

2)
import java.util.*;
class factorial{
public static void main(String []args){
Scanner input=new Scanner(System.in);
System.out.print("Enter Number:");
int num=input.nextInt();
long fac=num;
for(int i=num;i>1;i--)
{
fac=fac*(i-1);
}
System.out.println(fac);
}
}

Thanks