How to turn String type to char type

   Use System.arraycopy to solve this problem.

 

/**
 * @(#)wsi.java
 * @author, Harry Wei.
 * @version 1.00 2010-11-15
 */

public class wsi
{
    public static void main(String[] args)
    {
        String a="Hello";
        output(a);
    }
    static void output(String str){
 
 char[] b = new char[5];
 System.arraycopy( str.toCharArray(), 0, b, 0, str.length() ); 
            for( int i=0; i<5; i++)
                System.out.println(b[i]);
        }
}