All unique substring in a string

import java.util.Scanner;

public class UniqueSubstringOfAString
{
public static void main(String args[]){
String input,sub;
int i,c,length;
Scanner scanner=new Scanner(System.in);
input=scanner.nextLine();
length=input.length()
for(c=0;c < length;c++)
{


for(i=1;i <=length-c;i++)
{
sub=input.subString(c,c+i);
System.out.prinln(sub);
}
}
}

}