CharactersSearch.java

package strings;

public class CharactersSearch {

	public static void main(String[] args) {
		String str = "Hello World";
		
		int fi = str.indexOf('o');
		System.out.println("First occurence of char 's' is found at: " + fi );
		
		int li = str.lastIndexOf('o');
		System.out.println("Last occurence of char 's' is found at: " + li );
		
		int fo = str.indexOf('o', 4);
		System.out.println("First occurence of char 's' is found at 4: " + fo);
		
		int char_at = str.charAt(0); // ASCII Value of H
		System.out.println("Character at location 20: " + char_at);
		
		CharSequence seq = "World";
		boolean val = str.contains(seq);
		System.out.println("Found World ?: "+ val);
		
		// Substring search
		System.out.println("'Hello' found in String: " + str.startsWith("Hello"));
	}
}