public class StringProcessing {
	public static void main(String[] args) {
		String myString = "Hello World";
		
		// check if myString is same as another String object
		String anotherString = "Hi there, World!";
		if (myString.equals(anotherString)) { // do not use == 
			System.out.println("The two Strings are same");
		}
		
		// check the occurence of a substring in myString with indexOf() method
		if (myString.indexOf("Hello") != -1) {
			System.out.println(myString + " contains the substring");
		}
		
		// add a substring (concatenate)
		String nameString = "Raheel";
		myString = myString + " " + nameString; // concatenate with a space in between
		System.out.println("The concatenated String is: " + myString);
		
		// print all the characters in myString
		System.out.println("The characters in " + myString + " are:");
		for(int i=0; i<myString.length(); i++) {
			System.out.println(myString.charAt(i));
		}
	}
}