java入门练习

package com.example;

public class NewClass {    static final double PI=3.14;    static int age=23;    public static void main(String[] args){        final int number;        number=1235;        age=22;        System.out.println("常量PI的值为："+PI);        System.out.println("赋值后number的值为:"+number);        System.out.println("int型变量age的值为:"+age);    }}