Pfthb

class Mclass {
 public static void main(String args) 

 char a= 'a','b','c','d','a','b','c';
 int count = 0;

 for (int i=0; i<a.length; i++)
 
 for(int j=0; j<a.length; j++)
 
 if ( a[j] == a[i] )
 count += 1;
 
 System.out.println(a[i]+":"+count);
 count = 0;
 
 

Output:

a:2
b:2
c:2
d:1
a:2
b:2
c:2

Here I want to stop the loop until it counts d = 1. but it again prints the same variable? How can i do that?

Starting from what you already did, first sort the array then try to count

import java.util.*;
class Mclass 
 public static void main(String args) 
 char a= 'a','b','c','d','a','b','c';
 int count = 0;
 Arrays.sort(a); // sort the array
 for (int i=0; i<a.length; i++)
 
 for(int j=i; j<a.length; j++)
 
 if ( a[j] == a[i] )
 count += 1;
 continue;
 
 i=j-1;
 break;
 
 System.out.println(a[i]+":"+count);
 count = 0;
 
 

output

a:2
b:2
c:2
d:1

If you don't want to print the character that has already been printed, you need to maintain it somewhere like in a Set and print only when Set doesn't contain the character and after printing, add it to Set so next time on wards it doesn't get printed.

Change your code to this,

class Mclass 
 public static void main(String args) 
 Set<String> doneSet = new HashSet<String>();

 char a = 'a', 'b', 'c', 'd', 'a', 'b', 'c' ;
 int count = 0;

 for (int i = 0; i < a.length; i++) 
 for (int j = 0; j < a.length; j++) 
 if (a[j] == a[i])
 count += 1;
 
 if (!doneSet.contains(String.valueOf(a[i]))) 
 System.out.println(a[i] + ":" + count);
 doneSet.add(String.valueOf(a[i]));
 
 count = 0;
 
 

This gives following output as you intend,

a:2
b:2
c:2
d:1

Do not print inside loop

Save your count and print outside the loop.

Do something like this:

public class Mclass 
 public static void main(String args) 

 char a= 'a','b','c','d','a','b','c';
 int count = 0;
 Map<String,Integer> output = new HashMap<>();

 for (int i=0; i<a.length; i++)
 
 for(int j=0; j<a.length; j++)
 
 if ( a[j] == a[i] )
 count += 1;
 
 output.put(Character.toString(a[i]), count);
 //System.out.println(a[i]+":"+count);
 count = 0;
 
 System.out.println(output);