푸으름

✏️ 9장 실습문제 - 1번package ex;import javax.swing.*;import java.awt.*;import java.awt.event.*;public class SolveProblem extends JFrame{ public SolveProblem(){ setTitle("Let's study Java"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setBackground(Color.GRAY); setSize(400,200); setVisible(true); } public static void main(String[] args) { new Solve..

✏️ 8장 실습문제 - 1번package ex;import java.io.*;import java.util.*;public class SolveProblem{ public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.println("전화번호 입력 프로그램입니다."); try { FileWriter fileWriter = new FileWriter("c:\\temp\\phone.txt"); while (true) { System.out.print("이름 전화번호 >> "); ..

✏️ 7장 실습문제 - 1번package ex;import java.util.*;public class SolveProblem { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); Vector v = new Vector(); System.out.print("정수(-1이 입려될 때까지)>>>"); while(true){ int num = scanner.nextInt(); if(num==-1) break; v.add(num); } System.ou..

✏️  6장 실습문제 - 1package ex;import java.util.*;class MyPoint{ private int x,y; public MyPoint(int x, int y) { this.x = x; this.y = y; } public boolean equals(MyPoint p) { if(this.x==p.x && this.y==p.y) return true; else return false; } public String toString(){ String str = "point("+this.x+","+this.y+")"; return str;..