java oop : class, object, instance

JavaOOP/src/Java13.java

@@ -0,0 +1,25 @@
+import object.BookDTO;
+
+public class Java13 {
+    public static void main(String[] args) {
+        // 책 -> class(BookDTO) -> 객체 -> 인스턴스
+        String title = "자바";
+        int price = 25000;
+        String company = "출판사";
+        int page = 890;
+
+        // 데이터 이동을 쉽게 하기 위한 DTO
+        BookDTO dto; // dto (Object : 객체)
+        dto = new BookDTO(title, price, company, page); // dto (Instance : 인스턴스)
+
+        // 데이터 이동
+        bookPrint(dto);
+    }
+
+    public static void bookPrint(BookDTO dto) {
+        System.out.println(dto.title);
+        System.out.println(dto.price);
+        System.out.println(dto.company);
+        System.out.println(dto.page);
+    }
+}

JavaOOP/src/object/BookDTO.java

@@ -0,0 +1,18 @@
+package object;
+
+public class BookDTO {
+    public String title;
+    public int price;
+    public String company;
+    public int page;
+
+    public BookDTO() {
+    }
+
+    public BookDTO(String title, int price, String company, int page) {
+        this.title = title;
+        this.price = price;
+        this.company = company;
+        this.page = page;
+    }
+}