code print null

[Jaikant Singh]

public class StringTest
{
public static void main(String... args)
{
String str=null;
System.out.println(str);
}
}

why this code print null?

[Henry Wong]

Jaikant Singh wrote:

public class StringTest
{
public static void main(String... args)
{
String str=null;
System.out.println(str);
}
}

why this code print null?

Take a look at the JavaDoc for the java.io.PrintStream class.

Henry

[Jaikant Singh]

print

public void print(String s)

Prints a string. If the argument is null then the string "null" is printed. Otherwise, the string's characters are converted into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the write(int) method.

Parameters:
s - The String to be printed

print

public void print(Object obj)

Prints an object. The string produced by the String.valueOf(Object) method is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the write(int) method.

Parameters:
obj - The Object to be printed
See Also:
Object.toString()

I got the answer.
Thanks.