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๐Ÿ“š๊ฐœ๋ฐœ ๋ณต์Šต ๋…ธํŠธ

  • ๋ถ„๋ฅ˜ ์ „์ฒด๋ณด๊ธฐ (210)
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java(57)

  • ํด๋ž˜์Šค ๋ฌธ์ œ ํ’€๊ธฐ2

    //ํด๋ž˜์Šค๋ฌธ์ œ2_1~6 public class Man { String name; int age; String addr; //์ƒ์„ฑ์ž constructor //์ƒ์„ฑ์ž๋Š” return ํƒ€์ž…์ด ์—†๋‹ค. //์ƒ์„ฑ์ž๋Š” ๋ฐ˜๋“œ์‹œ ํด๋ž˜์Šค๋ช…๊ณผ ๋™์ผํ•ด์•ผ ํ•œ๋‹ค. public Man(){ name = "์ง€์ •๋˜์ง€ ์•Š์Œ."; age = 1; addr = "์‹ ์›๋ถˆ๋ช…"; } //๊ฐ’ ์ดˆ๊ธฐํ™” ์ฝ”๋”ฉ public void setInfo(String name, int age, String addr){ this.name = name; this.age = age; this.addr = addr; } public String getName() { return name; } public void setName(String name) { this.name..

    2023.01.29
  • ๋ฉ”์†Œ๋“œ ๋ฌธ์ œ ํ’€๊ธฐ3(์‹ฌํ™”)

    public class ๋ฉ”์†Œ๋“œ๋ฌธ์ œ์‹ฌํ™”1_1 { public static void main(String[] args) { test(5); } public static void test(int num) { for(int i = 1 ; i < 10 ; i++) { System.out.println(num + " * " + i + " = " + num * i); } } } public class ๋ฉ”์†Œ๋“œ๋ฌธ์ œ์‹ฌํ™”1_2 { public static void main(String[] args) { test2(10); } public static void test2(int num) { for (int i = 1 ; i < 101 ; i++) { if(i%num==0) { System.out.println(i); } } ..

    2023.01.29
  • ๋ฉ”์†Œ๋“œ ๋ฌธ์ œ ํ’€๊ธฐ2

    public class ๋ฉ”์†Œ๋“œ๋ฌธ์ œ2_1 { public static void main(String[] args) { int result = num(20,30); System.out.println(result); } public static int num(int num1, int num2) { return num1 + num2; } } import java.util.Scanner; public class ๋ฉ”์†Œ๋“œ๋ฌธ์ œ2_2 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int num1 = sc.nextInt(); int num2 = sc.nextInt(); System.out.println(num(num1,num2..

    2023.01.29
  • ๋ฐฐ์—ด ๋ฌธ์ œ ํ’€๊ธฐ 2

    import java.util.Scanner; public class ๋ฐฐ์—ด๋ฌธ์ œ2_1 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.print("๋ฐฐ์—ด์˜ ๊ธธ์ด ์ž…๋ ฅ : "); int length; length = sc.nextInt(); //๋‘ ์ค„ ํ•ฉ์ณ์„œ int length = sc.nextInt(); ๊ฐ€๋Šฅ int sum = 0; int[] arr = new int[length]; for(int i = 0; i < arr.length ; i++) { arr[i] = i + 1; sum = sum + arr[i]; } System.out.println("๋ฐฐ์—ด์ด ๊ฐ€์ง€๋Š” ์ˆ˜ ํ‰๊ท  : " + (dou..

    2023.01.29
  • class 2

    //์ด๋ฆ„ ๋ณ€๊ฒฝ ๋ฉ”์†Œ๋“œ >>> ๋ณ€์ˆ˜ ์ด๋ฆ„์— setter ๊ผญ ๋ถ™์ด๊ธฐ public void setName(String name) { this.name = name; //this ๋ถ™์ด๋ฉด ํด๋ž˜์Šค์—์„œ ์„ ์–ธ๋œ ๋ฉค๋ฒ„๋ณ€์ˆ˜ name์ด ๋จ. } //์ด๋ฆ„ ๊ฐ’ ๋ฆฌํ„ด //๋ฉค๋ฒ„ ๋ณ€์ˆ˜ ํ•˜๋‚˜์˜ ๊ฐ’์„ ๋ฐ›์•„์˜ฌ ๋•Œ get ๊ผญ ๋ถ™์ด๊ธฐ > getter public String getName(){ return this.name; //getter์—์„œ๋Š” ํ•ญ์ƒ ๋ฉค๋ฒ„๋ณ€์ˆ˜๋ฅผ ๊ฐ€๋ฅดํ‚ด this ์•ˆ ๋ถ™์—ฌ๋„ ๋™์ผ } setter๋ฅผ ๋งŒ๋“ค ๋•Œ this.๋ณ€์ˆ˜ ์“ฐ๊ธฐ this.๋ณ€์ˆ˜ : ์ด ํด๋ž˜์Šค์—์„œ ์„ ์–ธ๋œ ๋ณ€์ˆ˜ ์ด๋ ‡๊ฒŒ ์“ฐ๋Š” ์ด์œ  ๋ฉค๋ฒ„ ๋ณ€์ˆ˜๊ฐ€ ๋งŽ์„ ๋•Œ ๋งค๊ฐœ๋ณ€์ˆ˜์— ๋ฌด์—‡์ด ๋“ค์–ด๊ฐ€์•ผ ํ•˜๋Š”์ง€ ํ—ท๊ฐˆ๋ฆด ์ˆ˜ ์žˆ์Œ. ํด๋ž˜์Šค๋ฅผ ์™”๋‹ค ๊ฐ”๋‹ค ํ•˜๋ฉด์„œ ๋ณด๋ฉด ๋ถˆํŽธํ•˜๊ธฐ ๋•Œ๋ฌธ์— ๋ฉ”์†Œ๋“œ ํ˜ธ์ถœ ์‹œ ๋ฐ”๋กœ..

    2023.01.27
  • class3 + ๊ธฐ๋ณธ ์ž๋ฃŒํ˜•๊ณผ ์ฐธ์กฐ ์ž๋ฃŒํ˜•์˜ ์ฐจ์ด

    ๊ธฐ๋ณธ์ž๋ฃŒํ˜•๊ณผ ์ฐธ์กฐ์ž๋ฃŒํ˜•์˜ ์ฐจ์ด ๊ฐ’์ด ๋ณต์‚ฌ ๋จ. ํด๋ž˜์Šค์™€ ๊ฐ™์€ ์ฐธ์กฐ์ž๋ฃŒํ˜•์€ ๊ธฐ๋ณธ ์ž๋ฃŒํ˜•๊ณผ ๋‹ค๋ฅด๊ฒŒ ๊ฐ’์ด ๋ณต์‚ฌ๋˜๋Š” ํ˜•ํƒœ๊ฐ€ ์•„๋‹˜. ์—ฐ์Šต package study; public class Member { String name; int age; } m1 ์ด๋ฆ„๊ณผ m2 ๋‚˜์ด๋Š”? package study; public class MemberTest { public static void main(String[] args) { Member m1 = new Member(); Member m2 = new Member(); m1.name = "ํ™๊ธธ๋™"; m1.age = 20; m2.name = "์ž„๊บฝ์ •"; m2.age = 30; m1 = m2; m1.name = "์ด์ˆœ์‹ "; m2.age = 40; //m1์˜ ์ด๋ฆ„ ๋‚˜์ด? //m2..

    2023.01.27
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