# frequency of a letter in a string

Luke Coleman
frequency of a letter in a string
1 Answer(s)      5 years and 5 months ago
Posted in : Java Beginners

Write a program that takes in a string and a letter from the user and displays the number of appearances of the entered letter in the entered string.

February 22, 2012 at 10:06 AM

```import java.io.*;
import java.util.*;

class  CountCharacters {
public static void main(String[] args) throws Exception{
System.out.print("Please enter string ");
System.out.println();
String st=str.replaceAll(" ", "");

char[]third =st.toCharArray();
for(int counter =0;counter<third.length;counter++){
char ch= third[counter];
int count=0;
for ( int i=0; i<third.length; i++){
if (ch==third[i])
count++;
}
boolean flag=false;
for(int j=counter-1;j>=0;j--){
if(ch==third[j])
flag=true;
}
if(!flag){
System.out.println("Character :"+ch+" occurs "+count+" times ");
}
}
}
}
```

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