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# JAVA設計問題2

class Rectangle

{

int lenght,width;

String unit;

?

?

?

public static void main(string args[])

{

Rectangle r1=new (Rectangle(12,10,\"公分\");

r1.Print();

r1.Area();

r1.Lenght();

Rectangle r2=new (Rectangle(5,6,\"公尺\");

r2.Print();

r2.Area();

r2.Lenght();

}

}

### 1 Answer

Rating
• Samuel
Lv 5
2 decades ago
Favorite Answer

class Rectangle

{

int lenght,width;

String unit;

Rectangle(int lenght, int width, String unit) {

this.lenght = lenght;

this.width = width;

this.unit = unit;

}

void Print() {

System.out.println("長方形:" + lenght + unit + "X" + width + unit);

}

void Area() {

System.out.println("長方形面積:" + lenght * width + "平方" + unit);

}

void Lenght() {

System.out.println("長方形周長:" + (lenght + width) * 2 + unit);

}

public static void main(String args[])

{

Rectangle r1 = new Rectangle(12,10,"公分");

r1.Print();

r1.Area();

r1.Lenght();

Rectangle r2 = new Rectangle(5,6,"公尺");

r2.Print();

r2.Area();

r2.Lenght();

}

}

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