44-45.java变量类型

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package com.runoob.test; public class Test{    public void pupAge(){      int age = 0;      age = age + 7;      System.out.println("小狗的年龄是: " + age);   }      public static void main(String args[]){      Test test = new Test();      test.pupAge();   }}

package com.runoob.test; public class Test{    public void pupAge(){      int age;      age = age + 7;      System.out.println("小狗的年龄是 : " + age);   }      public static void main(String args[]){      Test test = new Test();      test.pupAge();   }}

import java.io.*;public class Employee{   // 这个实例变量对子类可见   public String name;   // 私有变量，仅在该类可见   private double salary;   //在构造器中对name赋值   public Employee (String empName){      name = empName;   }   //设定salary的值   public void setSalary(double empSal){      salary = empSal;   }     // 打印信息   public void printEmp(){      System.out.println("名字 : " + name );      System.out.println("薪水 : " + salary);   }    public static void main(String args[]){      Employee empOne = new Employee("RUNOOB");      empOne.setSalary(1000);      empOne.printEmp();   }}

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