Initialize a "final" variable in constructor

A constructor will be called each time an instance of the class is created. 

Thus, the above code means that the value of "bookName" will be re-initialized each time an instance is created. But because the variable is declared final (and static), you can only do this

First Portion:
package com.rizvi;

public class RizviPersonalLibrary {
private final static String bookName;

static {
bookName = "Road Rush";
}
public static void main(String[] args) {
RizviPersonalLibrary rpl = new RizviPersonalLibrary();
System.out.println("Book Name: "+rpl.bookName);
}

}

Output:
Book Name: Road Rush

Constructor block:
But, if you remove static, you are allowed to do this:
package com.rizvi;

public class RizviPersonalLibrary {
private final String bookName;

    public RizviPersonalLibrary() {
    bookName = "Road Rush";
    }

public static void main(String[] args) {
RizviPersonalLibrary rpl = new RizviPersonalLibrary();
System.out.println("Book Name: "+rpl.bookName);
}

}

Output:
Book Name: Road Rush

Instance initializer block:

package com.rizvi;

public class RizviPersonalLibrary {

private final String bookName;

{

bookName = "Road Run";

}

public static void main(String[] args) {

RizviPersonalLibrary rpl = new RizviPersonalLibrary();

System.out.println("Book Name: " + rpl.bookName);

}

}

Output:

Book Name: Road Rush

Link: http://stackoverflow.com/questions/5093744/initialize-a-static-final-field-in-the-constructor