public class Main {
final int x = 10;
final double PI = 3.14;
public static void main(String[] args) {
Main myObj = new Main();
myObj.x = 50; // 将产生错误:无法为 final 变量赋值
myObj.PI = 25; // 将产生错误:无法为 final 变量赋值
System.out.println(myObj.x);
}
}