diff --git a/day02-instance-class/src/main/java/com/survivalcoding/GreatWizard.java b/day02-instance-class/src/main/java/com/survivalcoding/GreatWizard.java
new file mode 100644
index 0000000..d81936d
--- /dev/null
+++ b/day02-instance-class/src/main/java/com/survivalcoding/GreatWizard.java
@@ -0,0 +1,30 @@
+package com.survivalcoding;
+
+public class GreatWizard extends Wizard {
+    public GreatWizard() {
+        setMp(150);
+    }
+
+    @Override
+    public void heal(Hero hero) {
+        if (getMp() < 5) {
+            System.out.println("마나가 부족합니다");
+            return;
+        }
+        hero.setHp(hero.getHp() + 25);
+        setMp(getMp() - 5);
+        System.out.println("힐을 시전했습니다. 대상 HP: " + hero.getHp());
+    }
+
+    public void superHeal(Hero hero) {
+        if (getMp() < 50) {
+            System.out.println("마나가 부족합니다");
+            return;
+        }
+
+        hero.setHp(100);
+        setMp(getMp() - 50);
+        System.out.println("슈퍼 힐을 시전했습니다. 대상 HP: " + hero.getHp());
+    }
+}
+
diff --git a/day02-instance-class/src/main/java/com/survivalcoding/PoisonSlime.java b/day02-instance-class/src/main/java/com/survivalcoding/PoisonSlime.java
new file mode 100644
index 0000000..3b26ba8
--- /dev/null
+++ b/day02-instance-class/src/main/java/com/survivalcoding/PoisonSlime.java
@@ -0,0 +1,24 @@
+package com.survivalcoding;
+
+public class PoisonSlime extends Slime {
+    private int poisonCount = 5;
+
+    public PoisonSlime(String suffix) {
+        super(suffix);
+    }
+
+    @Override
+    void attack(Hero hero) {
+        super.attack(hero);
+
+        if (poisonCount > 0) {
+            System.out.println("추가로, 독 포자를 살포했다!");
+
+            int poisonDamage = hero.getHp() / 5;
+            hero.setHp(hero.getHp() - poisonDamage);
+            System.out.println(poisonDamage + "포인트 데미지");
+
+            poisonCount--;
+        }
+    }
+}
diff --git a/day02-instance-class/src/main/java/com/survivalcoding/Slime.java b/day02-instance-class/src/main/java/com/survivalcoding/Slime.java
new file mode 100644
index 0000000..106e06c
--- /dev/null
+++ b/day02-instance-class/src/main/java/com/survivalcoding/Slime.java
@@ -0,0 +1,21 @@
+package com.survivalcoding;
+
+public class Slime {
+
+    final String suffix;
+    int hp;
+
+    public Slime(String suffix) {
+        this.suffix = suffix;
+        this.hp = 50;
+    }
+
+    // 생성자, getter, setter 작성
+
+    void attack(Hero hero) {
+        System.out.println("슬라임 " + suffix + "이/가 공격했다");
+        System.out.println("10의 데미지");
+
+        hero.setHp(hero.getHp() - 10);
+    }
+}
diff --git a/day02-instance-class/src/main/java/com/survivalcoding/Wizard.java b/day02-instance-class/src/main/java/com/survivalcoding/Wizard.java
index 3e87419..429c0cb 100644
--- a/day02-instance-class/src/main/java/com/survivalcoding/Wizard.java
+++ b/day02-instance-class/src/main/java/com/survivalcoding/Wizard.java
@@ -1,4 +1,69 @@
 package com.survivalcoding;
 
 public class Wizard {
+
+    private int hp;
+    private int mp = 100;
+    private String name;
+    private Wand wand;
+
+    public int getHp() {
+        return hp;
+    }
+
+    public void setHp(int hp) {
+        if (hp < 0) {
+            this.hp = 0;
+            return;
+        }
+        this.hp = hp;
+    }
+
+    public int getMp() {
+        return mp;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        if (name == null || name.length() < 3) {
+            throw new IllegalArgumentException("마법사의 이름은 null일 수 없고 3문자 이상이어야 합니다");
+        }
+        this.name = name;
+    }
+
+    public void setMp(int mp) {
+        if (mp < 0) {
+            throw new IllegalArgumentException("마법사의 MP는 0 이상이어야 합니다");
+        }
+        this.mp = mp;
+    }
+
+    public void setWand(Wand wand) {
+        if (wand == null) {
+            throw new IllegalArgumentException("마법사의 지팡이는 null일수 없습니다.");
+        }
+        this.wand = wand;
+    }
+
+    public void heal(Hero hero) {
+        if (mp < 10) {
+            System.out.println("마나가 부족합니다");
+            return;
+        }
+
+        hero.setHp(hero.getHp() + 20);
+        mp -= 10;
+        System.out.println("힐을 시전했습니다. 대상 HP: " + hero.getHp());
+    }
+
+
+    public void fireball(Hero hero) {
+
+
+    }
+
+
 }
diff --git "a/day02-instance-class/src/main/java/com/survivalcoding/\354\227\260\354\212\265\353\254\270\354\240\234_1.java" "b/day02-instance-class/src/main/java/com/survivalcoding/\354\227\260\354\212\265\353\254\270\354\240\234_1.java"
new file mode 100644
index 0000000..ce53d70
--- /dev/null
+++ "b/day02-instance-class/src/main/java/com/survivalcoding/\354\227\260\354\212\265\353\254\270\354\240\234_1.java"
@@ -0,0 +1,28 @@
+package com.survivalcoding;
+
+public class 연습문제_1 {
+    /* 1. Person Student    (O)
+    2. car  Engine         (X)
+    3. Father Child        (X)
+    4. Food Sushi          (O)
+    5. SuperMan Man        (X)
+
+
+
+     */
+}
+
+
+/* 연습문제_2
+               1                  2               3
+부모 클래스 ElectronicDevice      Vehicle         Book
+
+
+              Phone               Car        Dictionary
+
+
+
+자식 클래스  I-Phone             Bus           EnglishDictionary
+
+
+ */
\ No newline at end of file