Initialization of static modified variables

When invoking the value of a static variable, initialize it at the static block or call the value method if it is to be initialized.

Static block initialization:

public class Staticdemo {
private static String str; static variables defined
static{
str = "static block naming";
}
public static String Getstr () {
return str;
}
}

In the Main method call

public class Test {
public static void Main (string[] args) {
System.out.println (Staticdemo.getstr ());
}
}

Result output: static block naming

Initialized within the called static method

public class Staticdemo {
private static String str; static variables defined

public static String Getstr () {
str = "static method temporary naming";
return str;
}
}

Result output after Main method call: Static method temporary naming

But initialization in the constructor method

public class Staticdemo {
private static String str;
Public Staticdemo () {
str = "static block naming";
}
public static String Getstr () {

return str;
}
}

Result output after Main method call: null

When a static method is called to take the value of a static variable, the constructor method fails to initialize the value of the static variable.

Initialization of static modified variables