Convert string to CharSequence

When you see the definition of String class, it implements CharSequence interface.

public final class String implements java.io.Serializable, Comparable<String>, CharSequence {

         .....

         .....

}

Since String class implements CharSequence interface, any string is a char sequence too.

Example

String str = "Hello World";

CharSequence cs = str;

App.java

package com.sample.app;

public class App {

	public static void main(String args[]) {
		String str = "Hello World";
		CharSequence cs = str;

		for (int i = 0; i < cs.length(); i++) {
			System.out.println(cs.charAt(i));
		}
	}

}

Run App.java, you can see below messages in console.

H
e
l
l
o
 
W
o
r
l
d

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