혀가 길지 않은 개발자

프로그래밍을 하다 보면 기본 타입의 데이터를 객체로 표현해야 하는 경우가 종종 있다. public class JavaTest { public static void main(String[] args) { Integer integer = new Integer(123); // boxing System.out.println(getNumber(integer)); Boolean bool = new Boolean(true); // boxing System.out.println(getBoolean(bool)); Long lNumber = new Long(999999999999999999L); // boxing System.out.println(getLong(lNumber)); String str = "James Kim..

public class JavaTest { public static void main(String[] args) { String[][] strArr2D = new String[2][2]; strArr2D[0][0] = "00"; strArr2D[0][1] = "01"; strArr2D[1][0] = "10"; strArr2D[1][1] = "11"; for (int i=0; i

public class JavaTest { public static void main(String[] args) { String[] strArr = new String[2]; strArr[0] = "James Kim"; strArr[1] = "Jason Park"; for (int i=0; i

MVVM (Model + View + ViewModel) build.gradle (Module: app) android { dataBinding { enabled = true } } 데이터 바인딩 사용하기 위함 activity_main.xml bindingadapter/BindingAdapters.java package com.jwsoft.javaproject.bindingadapter; import android.view.View; import android.widget.LinearLayout; import androidx.databinding.BindingAdapter; public class BindingAdapters { @BindingAdapter("android:JamesVisible") pu..

MVC (Model + View + Controller) activity_main.xml View 역할 model/Player.java package com.jwsoft.model; public enum Player { O, X } model/Cell.java package com.jwsoft.model; public class Cell { private Player value; public void setValue(Player value) { this.value = value; } public Player getValue() { return value; } } model/Board.java package com.jwsoft.model; public class Board { private Cell[][]..