public class Example01
 {
        final static float PI=3.1415926F;
        static int age=23;
        public static void main(String [] args) {
        final int number;
        number=123;
                  age=0;
                  System.out.println("常量PI="+PI);
                  System.out.println("赋值后的number="+number);
                  System.out.println("int类型age="+age);
}
}