求程序員幫忙寫個Java代碼，因為今天我有事沒時間做，明天要交作業，謝謝了

代碼如下，隨便附壹句，壹定要看寫的源碼，我已經盡量馬馬虎虎的寫了，妳更容易看懂。

//?第八題

public?static?final?int?NUM?=?100;

public?static?final?double?GOOD?=?99.99;

public?static?final?String?CLASSNAME?=?"Test.Class";

public?static?final?long?MAX?=?9999999;

public?static?void?main(String[]?args)?{

//?第壹題

byte?byte1?=?1;

short?short1?=?1;

int?int1?=?1;

long?long1?=?1;

float?float1?=?1;

double?double1?=?1.0;

System.out.println("byte1?-?"?+?byte1);

System.out.println("short1?-?"?+?short1);

System.out.println("int1?-?"?+?int1);

System.out.println("long1?-?"?+?long1);

System.out.println("float1?-?"?+?float1);

System.out.println("double1?-?"?+?double1);

//?第二題

String?name;

char?sex;

int?age;

boolean?isMember;

//?第三題

int?score1;

double?score2?=?98.5;

//?第四題

double?f1?=?10.1,?f2?=?34.2;

System.out.println("f1，f2的和:"?+?(f1?+?f2));

System.out.println("f1，f2的差:"?+?(f1?-?f2));

System.out.println("f1，f2的積:"?+?(f1?*?f2));

System.out.println("f1，f2的商:"?+?(f1?/?f2));

//?第五題

int?f3?=?5;

double?f4?=?45.6;

System.out.println("f3，f4的和:"?+?(f3?+?f4));

System.out.println("f3，f4的差:"?+?(f3?-?f4));

System.out.println("f3，f4的積:"?+?(f3?*?f4));

System.out.println("f3，f4的商:"?+?(f3?/?f4));

//?第六題

int?A?=?65;

char?a?=?(char)?A;

System.out.println("整型互轉char:"?+?a);

//?第七題

double?timor?=?123.456789;

int?x?=?Integer

.parseInt(new?java.text.DecimalFormat("0").format(timor));//?四舍五入

System.out.println("double?->?int?:"?+?x);

//?第八題(定義在最開始)

System.out.println("常量NUM的值:?"?+?NUM);

System.out.println("常量GOOD的值:?"?+?GOOD);

System.out.println("常量CLASSNAME的值:?"?+?CLASSNAME);

System.out.println("常量MAX的值:?"?+?MAX);

//?第九題(自定義商品類)

class?Goods?{

private?String?name;

private?double?price;

private?int?count;

private?double?total;

public?Goods(String?name,?double?price,?int?count)?{

this.name?=?name;

this.price?=?price;

this.count?=?count;

}

public?void?print()?{

total?=?price?*?count;

System.out.println("商品名 ?價格?數量 ?總價");

System.out.println(name?+?" ?"?+?price?+?" ?"?+?count?+?" ?"

+?total);

}

}

Goods?goods?=?new?Goods("蘋果",?2,?10);

goods.print();

//?第十題

double?pi?=?3.14,?r,?d;

r?=?4;

d?=?2?*?r;

System.out.println("圓的周長:?"?+?(pi?*?d));

System.out.println("圓的面積:?"?+?(pi?*?r?*?r));

//?第十壹題

String?qqname?=?"1234567890";

String?qqpassword?=?"asd!#@#$%66";

Date?birth?=?new?Date(2014,?5,?1);

boolean?isVIP?=?false;

char?sex1?=?'男';

StringBuilder?personInfo?=?new?StringBuilder();

personInfo.append("我是壹個快樂的騷年");

personInfo

.append("然後a!#$%^&*asdasdasdasdsa9d87a9s8d79asdjidauisdhausdihiasd");

//?第十二題

class?Swaper?{

public?void?change(int?num1,?int?num2)?{

int?temp?=?num1;

num1?=?num2;

num2?=?temp;

System.out.printf("a=%d,b=%d\n",?num1,?num2);

}

}

int?a1?=?2;

int?b1?=?5;

Swaper?swaper?=?new?Swaper();

swaper.change(a1,?b1);

}

}