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public class JavaDay002_1 {
String Country;
String Identifiy;
String City;
String Street;
String Stamp;
public void setCountry(String country) {
Country = country;
}
public void setIdentifiy(String identifiy) {
Identifiy = identifiy;
}
public void setCity(String city) {
City = city;
}
public void setStreet(String street) {
Street = street;
}
public void setStamp(String stamp) {
Stamp = stamp;
}
public String getCountry() {
return Country;
}
public String getIdentifiy() {
return Identifiy;
}
public String getCity() {
return City;
}
public String getStreet() {
return Street;
}
public String getStamp() {
return Stamp;
}
public static void main(String []args)
{
JavaDay002_1 address = new JavaDay002_1();
address.setCountry("Chain");
address.setIdentifiy("Student");
address.setCity("Beijing");
address.setStreet("XinFuRoad");
address.setStamp("402310");
System.out.println("地址：" +
address.getCountry() + "_" +
address.getIdentifiy() + "_" +
address.getCity() + "_" +
address.getStreet() + "_" +
address.getStamp());
}
}
public class JavaDay002_2 {
String strName;
String strColor;
String strAge;
public JavaDay002_2(String strName, String strColor, String strAge) {
this.strName = strName;
this.strColor = strColor;
this.strAge = strAge;
}
void ShowDog()
{
System.out.println("此狗叫" + strName + "," + strColor + "色," + strAge + "岁");
}
public static void main(String []args)
{
JavaDay002_2 Dog = new JavaDay002_2("旺财", "白", "2");
Dog.ShowDog();
}
}
public class JavaDay002_3 {
int Rectangle(int length, int wight)
{
return length * wight;
}
int Trangle(int aSide, int bSide, int cSide)
{
int s = (aSide + bSide + cSide) / 2;
double area = (double) (s * (s - aSide) * (s - bSide) * (s - cSide));
return (int) Math.pow(area, 0.5);
}
int Round(int redis)
{
return (int) (redis * redis * 3.14);
}
int IntNumber(int nNum)
{
return nNum;
}
public static void main(String []args)
{
JavaDay002_3 array = new JavaDay002_3();
System.out.println("矩形：" + array.Rectangle(3, 4)
+ " 三角形：" + array.Trangle(3, 4, 5)
+ " 圆：" + array.Round(2)
+ " 整数：" + array.IntNumber(5));
}
}
public abstract class JavaDay002_4 {
abstract int area();
abstract int perimeter();
}
class Rect extends JavaDay002_4
{
int length;
int wight;
public int getLength() {
return length;
}
public void setLength(int length) {
this.length = length;
}
public int getWight() {
return wight;
}
public void setWight(int wight) {
this.wight = wight;
}
@Override
int area() {
return length * wight;
}
@Override
int perimeter() {
return (length + wight) * 2;
}
}
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