1.print(Objectobj) 위의 출력문은 무엇을 출력하는가? 나는 obj의 주소를 출력하는 줄 알았다.https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/PrintWriter.html#print(java.lang.Object)All Implemented Interfaces: Closeable , Flushable , Appendable , AutoCloseable public class PrintWriter extends Writer Prints formatted representations of objects to a text-output stream. This class implements all of the print methods found in PrintStream . It does not contain methods for writing… docs.oracle.com 그러나 … 자바가사 -print, Array List, String Builder 계속 읽기