// Doan code static, duoc thuc hien dau tien va duy nhat 1 lan khi chay chuong trinh

static {

System.out.println("Day la class Sinh Vien");

}

public String tenSV;//dung rieng cho moi doi tuong

public static String tenTruong;//dung chung cho tat ca cac doi tuong

public static void inThongTin(){

System.out.println("Ten truong: "+tenTruong);

}

}

public class Main {

public static void main(String[] args) {

SinhVien sv = new SinhVien();

}

}

Kết quả:

Day la class Sinh Vien