occurence_of_char.java

public class CountOccuranceOfChar1  
{  
static final int MAX_CHAR = 256;  
static void getOccuringChar(String str)  
{  
//creating an array of size 256 (ASCII_SIZE)  
int count[] = new int[MAX_CHAR];  
//finds the length of the string  
int len = str.length();  
//initialize count array index  
for (int i = 0; i < len; i++)  
count[str.charAt(i)]++;  
//create an array of given String size  
char ch[] = new char[str.length()];  
for (int i = 0; i < len; i++)   
{  
ch[i] = str.charAt(i);  
int find = 0;  
for (int j = 0; j <= i; j++)   
{  
//if any matches found  
if (str.charAt(i) == ch[j])  
find++;  
}             
if (find == 1)  
//prints occurrence of the character   
System.out.println("The occurrence of "+ str.charAt(i)+ " is: " + count[str.charAt(i)]);  
}  
}  
//driver Code  
public static void main(String args[])  
{  
String str = "Pneumonoultramicroscopicsilicovolcanoconiosis"; //lung disease  
//function calling  
getOccuringChar(str);  
}  
}