String st1 = "Al-Huson"; String st2 = "College"; 
 
void setup() { 
  Serial.begin(9600); 
 
                // length 
  Serial.print("Length of st2: "); 
  Serial.println(st2.length()); 
 
                // Character position 
  Serial.print("Character at index 3 in st2: "); 
  Serial.println(st2.charAt(3)); 
 
                // Compare 
  Serial.print("Comparison of st1 and st2: "); 
  Serial.println(st1.compareTo(st2)); 
 
               // Concate 
  Serial.print("Concatenated st1 and st2: "); 
  Serial.println(st2.concat(st1)); 
 
              // Check if st1 ends with a  substring 
  Serial.print("st1 end with 'uson'? "); 
  Serial.println(st1.endsWith("uson")); 
 
           // Equal case sensitive 
  Serial.print(" st1 and 'Al-Huson' equal? "); 
  Serial.println(st1.equals("Al-Huson")); 
 
                      // Equal 
  Serial.print(" st1 and 'AL-HUSON' equal ignor case? "); 
  Serial.println(st1.equalsIgnoreCase("AL-HUSON")); 
 
                   // Get byte 
  byte buffer[3]; 
  st1.getBytes(buffer, 3); 
  Serial.print("Bytes of st1: "); 
  for (int i = 0; i < 3; i++) { 
    Serial.print(buffer[i]); 
    Serial.print(" "); 
  } 
  Serial.println(); 
 
                     // Index of substring 
  Serial.print("Index 's' st1: "); 
  Serial.println(st1.indexOf('s')); 
 
              // Last index substring 
  Serial.print("Last index 'e' in st2: "); 
  Serial.println(st2.lastIndexOf('e')); 
 
             // Remove char index 
  String tempSt1 = st1; 
  tempSt1.remove(3); 
  Serial.print("st1  remove character index 3: "); 
  Serial.println(tempSt1); 
 
            // Replac char 
  st1.replace('s', 'l'); 
  Serial.print("st1 replac 's' with 'l': "); 
  Serial.println(st1); 
 
                  // Substring from index 
  Serial.print("Substring of st1 from index 4: "); 
  Serial.println(st1.substring(4)); 
 
                           // Substring between two indexes 
  Serial.print("Substring of st2 from index 0 to 3: "); 
  Serial.println(st2.substring(0, 3)); 
 
             // character array 
  char charArray[5]; 
  st2.toCharArray(charArray, 5); 
  Serial.print("Character array from st2: "); 
  for (int i = 0; i < 5; i++) { 
    Serial.print(charArray[i]); 
    Serial.print(" "); 
  } 
  Serial.println(); 
 
                    //  lowercase  
  st1.toLowerCase(); 
  Serial.print("st1 in lowercase: "); 
  Serial.println(st1); 
 
                      // uppercase  
  st2.toUpperCase(); 
  Serial.print("st2 in uppercase: "); 
  Serial.println(st2); 
 
                  // Trim 
  String trimmedSt1 = "  Al-Huson  "; 
  trimmedSt1.trim(); 
  Serial.print("Trimm st1: '"); 
  Serial.print(trimmedSt1); 
  Serial.println("'"); 
 
                       // Startswith 
  Serial.print(" st2 start with 'salsabela'? "); 
  Serial.println(st2.startsWith("salsabela")); 
 
                   // integer  
  String numStr = "07787"; 
  Serial.print("String '00787' convert  integer: "); 
  Serial.println(numStr.toInt()); 
 
             //  float 
  String floatStr = "99.8"; 
  Serial.print("String '99.8' converte  float: "); 
  Serial.println(floatStr.toFloat()); 
 
  Serial.println();  
}  
 
void loop() { 
 
}