count the number of occurrences of a character in a string java code example
Example 1: count occurrences of character in string java 8
String someString = "elephant";
long count = someString.chars().filter(ch -> ch == 'e').count();
assertEquals(2, count);
long count2 = someString.codePoints().filter(ch -> ch == 'e').count();
assertEquals(2, count2);
Example 2: number of occurence string in java
public class StringNumberOfOccurenceLetter {
private static int countOccurences(String word, char character){
int count = 0;
for (int i = 0; i < word.length() ; i++) {
if (word.charAt(i)==character){
count++;
}
}
return count;
}
public static void main(String[] args) {
int count = countOccurences("dddssad", 'a');
}
}
Example 3: find number of occurrences of a substring in a string java
public static int count(String str, String target) {
return (str.length() - str.replace(target, "").length()) / target.length();
}
Example 4: count number of occurrences of character in string
public class CountStringOccurence {
public static void main(String[] args) {
int count= countOccurences("aaassssddadad",'s');
System.out.println(count);
}
private static int countOccurences(String word, char character){
int count = 0;
for(int i = 0; i < word.length(); i++){
if(word.chartAt(i) == character){
count++; }
}
return count;
}
}
Example 5: count the number of occurrences of a character in a string java
String line = "apples.oranges.bananas";
int count = line.length() - line.replace(".", "").length();
System.out.println(count);