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public class BurgerSet extends Burger { // Burger¸¦ »ó¼ÓÇؼ Ŭ·¡½º BurgerSet¸¦ »ý¼ºÇÔ.
public BurgerSet() { // Ŭ·¡½º »ý¼ºÀÚ super(); //superÀÇ Àǹ̴ Burger Ŭ·¡½º¸¦ ¸»ÇØ¿ä.. Áï, ÇØ´ç Ŭ·¡½ºÀÇ ºÎ¸ð Ŭ·¡½º¸¦ ¸»ÇØ¿ä } protected int getPrice() { //getPrice¸¦ ¿À¹ö¶óÀ̵å ÇÔ. ´Ü, ´Ù¸¥ Ŭ·¡½º¿¡¼ BurgerSetÀ» »ó¼Ó ¹Þ¾Æµµ ÇØ´ç ÇÔ¼ö º¯°æ ºÒ°¡´ÉÇÔ. return (super.getPrice() + 1500) * getQuantity(); // burgerŬ·¡½ºÀÇ price¿¡ 1500À» ´õÇÏ°í getQuantity¿¡¼ ±¸ÇÑ ¼ö·®À» °öÇÔ. } public int getQuantity() { //Burger¿¡¼ ±¸ÇÑ ¼ö·®À» ¸®ÅÏÇÔ. return super.quantity; } public void setQuantity(int quantity) { //Burger¿¡¼ ±¸ÇÑ ¼ö·®À» BurgerSetÀÇ ¼ö·®À¸·Î ÃʱâÈÇÔ. super.quantity = quantity; } public static void main(String[] args) { // mainÇÔ¼ö BurgerSet burgerSet = new BurgerSet(); // BurgerSet Ŭ·¡½º È£Ãâ burgerSet.setQuantity(2); // ¼ö·®À» 2°³·Î ÃʱâÈ System.out.println("¹ö°Å " + burgerSet.getQuantity()+"¼ÂÆ®ÀÇ °ªÀº " + // ¹ö°Å 2¼ÂÆ®ÀÇ °ªÀº 10000¿øÀÔ´Ï´Ù. ȸéÃâ·Â burgerSet.getPrice()+ "¿øÀÔ´Ï´Ù."); // (3500 + 1500) * 2 = 10000 } } |
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Àúµµ Ç×»ó °øºÎ¸¦ ÇÏ°í ÀÖ´Â »ç¶÷ÀÔ´Ï´Ù.¤¾¤¾ Àúµµ Çѹø Ŭ·¡½º¸¦ ¸¸µé¾îºÃ½À´Ï´Ù. ÀÌÇØ°¡ µÇ½Ç·±Áö ¸ð¸£°ÚÁö¸¸ ¼Ò½º¿Ã·Áµå¸³´Ï´Ù. public class Burger { private int price; // °¡°Ý private int quantity;// ¼ö·® // »ý¼ºÀÚ. public Burger(int price) { this.price = price; } // »ý¼ºÀÚ. public Burger() { this(3500); // »ý¼ºÀÚ ¿À¹ö·Îµù. // price = 3500; À¸·Î ÀÌ »ý¼ºÀÚ°¡ »óÀ§ »ý¼ºÀÚ À§·Î ¿Ã¶ó°¡µµ µË´Ï´Ù. } protected int getPrice() { return price; } protected void setPrice(int price) { // º¯¼ö¿¡ ´ëÇÑ Á÷Á¢ Á¢±ÙÀ» ¸·±â À§ÇÔ. this.price = price; } protected int getQuantity() { return quantity; } protected void setQuantity(int quantity) { // À߸øµÈ °ªÀ» ÀÔ·Â ¹ÞÀ»°æ¿ì ´ëÇÑ Ã³¸®. if (quantity <= 0 || quantity > 100) { quantity = 0; return; } this.quantity = quantity; } } public class BurgerSet extends Burger { public BurgerSet() { super(); // ÀÌ°Å Çϳª¸¸ ¾²¸é public Burger(int price) »ý¼ºÀÚ ÇÊ¿ä¾øÀ½. } public BurgerSet(int price) { super(price); } // ÀÌ°Å´Â ºÎ¸ðÀÇ ¸Þ¼µå¸¦ ¿À¹ö¶óÀ̵å ÇÏ°Ô µË´Ï´Ù. // ¾Æ·¡·Î ¼öÁ¤ÇÕ´Ï´Ù. // protected int getPrice() { // return (super.getPrice() + 1500) * getQuantity(); // } protected int totalPrice() { return (getPrice() + 1500) * getQuantity(); } void showBill() { // ºÎ¸ð ¸Þ¼µå¿¡¼ À߸øµÈ ¼ö·®¿¡ ´ëÇÏ¿© ȸé Ãâ·Â. if (super.getQuantity() == 0) { System.out.println("¼ö·®À» À߸øÀÔ·ÂÇϼ̽À´Ï´Ù."); return; } System.out.println("¹ö°Å " + getQuantity() + "¼ÂÆ®ÀÇ °ªÀº " + totalPrice() + "¿øÀÔ´Ï´Ù."); } } /** * Çܹö°Å ÁÖ¹® Ŭ·¡½º. ÀÌ°÷¿¡¼ Ŭ·¡½º °´Ã¼¸¦ »ý¼ºÇÏ¿© ½ÇÇàÇÔ. * */ public class BurgerCall { public static void main(String[] args) { /** * Ŭ·¡½º¸¦ Àû°í º¯¼ö¸íÀ» ÀûÀº´ÙÀ½. new ¸¦ Çϴ°ÍÀ¸·Î °´Ã¼°¡ »ý¼º. * * »ý¼ºµÈ °´Ã¼¸¦ Á¢±ÙÇϱâÀ§ÇÑ . »ç¿ë. * * ºÎ¸ðŬ·¡½º burger Ŭ·¡½ºº¯¼ö¿¡ private Á¢±ÙÁ¦ÇÑÀ» °É¾î. * * Á÷Á¢ÀûÀ¸·Î º¯¼ö¿¡ Á¢±ÙÇÏÁö¸øÇϵµ·Ï ÇÏ°í ¸Þ¼µå¸¦ ÅëÇؼ Á¢±ÙÇÏ°Ô ¸¸µë. * * ¿¹{ ÇÑÁ¤¼ö·® °°Àº¼ö·®À» 10°³ÀÌ»ó ÁÖ¹®À» ÇÒ°æ¿ì ÁÖ¹®°ÅºÎ ÇÒ¼ö ÀÖµµ·Ï ÇÒ¼öÀÖÀ½. * * } * */ // 1¹ø ÁÖ¹® BurgerSet burgerSet = new BurgerSet(); burgerSet.setQuantity(2); burgerSet.showBill(); // 2¹ø ÁÖ¹® BurgerSet burgerSet2 = new BurgerSet(3000); burgerSet2.setQuantity(1); burgerSet2.showBill(); } } ÀÌ»óÀÔ´Ï´Ù. ±â³×¿ä. ¤¾¤¾ Á˼ÛÇÕ´Ï´Ù. ¼ö°íÇϼ¼¿ä. |
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¿Ã·Á³õÀ¸½Å Äڵ忡¼ ÇÙ½ÉÅ°¿öµå´Â »ó¼Ó »ý¼ºÀÚ ¿À¹ö·Îµù Á¤µµµÇ°Ú³×¿ä ³ª¸ÓÁø Á÷Á¢ ã¾Æº¸½Ã´Â°Ô µµ¿òµÉµí
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public class Burger { // Burger ¶ó´Â Ŭ·¡½º »ý¼º
private int price; //Ŭ·¡½º ¸â¹ö º¯¼ö·Î price, quantity¶ó´Â integer »ý¼º
public int quantity;
public Burger(int price) { // Ŭ·¡½º »ý¼ºÀÚ
this.price = price; // Ŭ·¡½º »ý¼º½Ã price¸¦ ¹Þ¾Æ¼ ÃʱâÈÇÔ.
}
public Burger() { //Ŭ·¡½º »ý¼ºÀÚ
this(3500); // price¸¦ ÃʱâÈ ¾ÈÇϸé 3500À¸·Î °íÁ¤
}
protected int getPrice() { //getPrice ÇÔ¼ö price¸¦ ¸®ÅÏÇÔ.
return price;
}
}
Ŭ·¡½º »ý¼ºÀڴ Ŭ·¡½º°¡ ¸¸µé¾î Áú¶§ µ¿ÀÛÇÏ´Â ºÎºÐÀÌ¿¡¿ä..
º¯¼ö¸¦ ÃʱâÈ ÇÒ¼öµµ ÀÖ°í Ŭ·¡½º³» ÇÔ¼ö¸¦ È£ÃâÇÒ¼öµµ ÀÖ¾î¿ä.
Àúµµ ¿À¹ö¶óÀ̵ù ¿À¹ö·Îµù ¸¹ÀÌ Çò°¥·È´ø ÅͶó..¤¾¤¾
Stack over flow º¸½Ã¸é¼ °øºÎÇÏ½Ã¸é ¸¹ÀÌ µµ¿òµÇ½Ç°Å¿¡¿ä Á¦°¡ ±Ã±ÝÇÑ °ÍµéÀº °ÅÀÇ ´Ù ÀÌ¹Ì ´©°¡ Áú¹®Çسù´õ¶ó±¸¿ä