Count Characters

import java.util.Scanner;
class StringHandling
{
public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
String s=sc.nextLine();
int i,j,cnt=0;
char ch;
for(i=0;i<s.length();i++)
{
ch=s.charAt(i);
//if character is already
// present then skip
if(s.indexOf(ch)<i)
continue;
for(j=(i+1);j<s.length();j++)
{
if(s.charAt(j)==ch)
cnt++;
}
System.out.println(ch+": "+cnt);
//reset count to 0
cnt=0;
}
}
}