please find error

Question

public class Program
{
public static void main(String[] args)
{
int i;
string str=new string("Hey its my first program on java and my second learning day...!!!!!");
for(i=0;i<length.str();i++)
{
System.out.println(str[i]);
Thread.sleep(5);
}

}
}

Answer 1

* string needs a capital S

* length.str() is reversed. It should be str.length()

* str[i] is not a valid syntax in java. (Because a string is not an array, and [] is only valid for arrays)
Use charAt() instead
Like:
str.charAt(i)

Answer 2

import java.util.*;
import java.lang.*;
import java.io.*;
public class Program extends Thread
{
public static void main(String[] args)
{
int i;
String s1="Hey its my first program on java and my second learning day...!!!!!";
char[] str = s1.toCharArray();
int s = str.length;
for(i=0;i<s;i++)
{

System.out.println(str[i]);

}

}
}

this code is working by using str[i]