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1、 海量资料 超值下载/习题2.2import java.util.*;class MyDate private int year; private int month; private int day; public MyDate(int y,int m,int d)/构造函数，构造方法 year=y; month=m; day=d; /end public MyDate(int y,int m,int d) public int getYear()/返回年 return year; /end getYear() public int getMonth()/返回月 return month;
2、/end getMonth() public int getDay()/返回日 return day; /end getDay() /end class MyDateclass Employee private String name; private double salary; private MyDate hireDay; public Employee(String n,double s,MyDate d) name=n; salary=s; hireDay=d; /end public Employee(String n,double s,MyDate d) public void
3、print() System.out.println(名字:+name+n工资:+salary+n雇佣年份:+hireYear()+n); /end print() public void raiseSalary(double byPercent) salary*=1+byPercent/100; /end public int hireYear() return hireDay.getYear(); /end class Employeepublic class MyTestClass public static void main(String args) Employeestaff=ne
4、w Employee3; staff0=new Employee(Harry Hacker,35000,new MyDate(1989,10,1); staff1=new Employee(Carl Carcker,75000,new MyDate(1987,12,15); staff2=new Employee(Tony Tester,38000,new MyDate(1990,3,12); int integerValue; System.out.println(The information of employee are:); for(integerValue=0;integerVal
5、ue=2;integerValue+) staffintegerValue.raiseSalary(5); /end for() for(integerValue=0;integerValue=2;integerValue+) staffintegerValue.print(); /end for() /end main()/end class MyTestClass/习题2.4import java.util.*;public class DataType public static void main(String args) boolean flag; char yesChar; byt
6、e finByte; int intValue; long longValue; short shortValue; float floatValue; double doubleValue; flag=true; yesChar=y; finByte=30; intValue=-7000; longValue=200l; shortValue=20000; floatValue=9.997E-5f; doubleValue=floatValue*floatValue; System.out.println(the values are:); System.out.println(布尔类型变量
7、flag=+flag); System.out.println(字符型变量yesChar=+yesChar); System.out.println(字节型变量finByte=+finByte); System.out.println(整型变量intValue=+intValue); System.out.println(长整型变量longValue=+longValue); System.out.println(短整型变量shortValue=+shortValue); System.out.println(浮点型变量floatValue=+floatValue); System.out.p
8、rintln(双精度浮点型变量doubleValue=+doubleValue); /end main()/习题2.9import java.util.*;class PubTest1 private int ivar1; private float fvar1,fvar2; public PubTest1() fvar2=0.0f; public float sum_f_I() fvar2=fvar1+ivar1; return fvar2; public void print() System.out.println(fvar2=+fvar2); public void setIvar1(
9、int ivalue) ivar1=ivalue; public void setFvar1(float ivalue) fvar1=ivalue; public class PubMainTest public static void main(String args) PubTest1 pubt1=new PubTest1(); pubt1.setIvar1(10); pubt1.setFvar1(100.02f); pubt1.sum_f_I(); pubt1.print(); /习题2.10import java.util.*;class Date private int year;
10、private int month; private int day; public Date(int day, int month, int year) /构造函数，构造方法 this.year = year; this.month = month; this.day = day; /end public MyDate(int y,int m,int d) public int getYear() /返回年 return year; /end getYear() public int getMonth() /返回月 return month; /end getMonth() public i
11、nt getDay() /返回日 return day; /end getDay() /end class Datepublic class Teacher String name;/教师名字 boolean sex;/性别，true表示男性 Date birth;/出生日期 String salaryID;/工资号 String depart;/教师所在系所 String posit;/教师职称 String getName() return name; void setName(String name) this.name = name; boolean getSex() return s
12、ex; void setSex(boolean sex) this.sex = sex; Date getBirth() return birth; void setBirth(Date birth) this.birth = birth; String getSalaryID() return salaryID; void setSalaryID(String salaryID) this.salaryID = salaryID; String getDepart() return depart; void setDepart(String depart) this.depart = dep
13、art; String getPosit() return posit; void setPosit(String posit) this.posit = posit; public Teacher() System.out.println(父类无参数的构造方法！); /如果这里不加上这个无参数的构造方法将会出错！ public Teacher(String name,boolean sex,Date birth, String salaryid,String depart,String posit) this.name=name; this.sex=sex; this.birth=birth; this.salaryID=sal
