\uc548\ub155\ud558\uc138\uc694! \uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \uc790\ubc14 \uc5b8\uc5b4\ub97c \ud65c\uc6a9\ud55c \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc758 \ud575\uc2ec \uac1c\ub150 \uc911 \ud558\ub098\uc778 ‘\ud074\ub798\uc2a4’\uc640 ‘\uc0dd\uc131\uc790’\uc5d0 \ub300\ud574 \uae4a\uc774 \uc788\uac8c \uc54c\uc544\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc790\ubc14\ub294 \uac1d\uccb4 \uc9c0\ud5a5 \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\ub85c, \ud074\ub798\uc2a4\uc640 \uac1d\uccb4\ub294 \uc790\ubc14\uc5d0\uc11c \ub9e4\uc6b0 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \ucf54\ub4dc\uc758 \uc7ac\uc0ac\uc6a9\uc131\uacfc \uc720\uc9c0\ubcf4\uc218\uc131\uc744 \ub192\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\ud074\ub798\uc2a4\ub294 \uac1d\uccb4 \uc9c0\ud5a5 \ud504\ub85c\uadf8\ub798\ubc0d\uc758 \uae30\ubcf8 \ub2e8\uc704\ub85c, \uac1d\uccb4\ub97c \uc0dd\uc131\ud558\uae30 \uc704\ud55c \uccadprint\uc785\ub2c8\ub2e4. \ud074\ub798\uc2a4\ub294 \ub370\uc774\ud130(\uc18d\uc131)\uc640 \uba54\uc18c\ub4dc(\uae30\ub2a5)\ub97c \ud558\ub098\ub85c \ubb36\uc5b4 \uac1d\uccb4\ub97c \uc815\uc758\ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, ‘\uc790\ub3d9\ucc28’\ub77c\ub294 \ud074\ub798\uc2a4\ub97c \ub9cc\ub4e0\ub2e4\uace0 \uac00\uc815\ud574\ubd05\uc2dc\ub2e4. \uc774 \ud074\ub798\uc2a4\ub294 \uc790\ub3d9\ucc28\uc758 \uc18d\uc131(\uc608: \ube0c\ub79c\ub4dc, \uc0c9\uc0c1, \ubaa8\ub378)\uacfc \uae30\ub2a5(\uc608: \uac00\uc18d, \uac10\uc18d, \uc8fc\ucc28)\uc744 \ud3ec\ud568\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\uc790\ubc14\uc5d0\uc11c \ud074\ub798\uc2a4\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uad6c\uc870\ub97c \uac00\uc9c0\uace0 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n
public class Car {\n \/\/ \uc18d\uc131\n String brand;\n String color;\n int model;\n\n \/\/ \uc0dd\uc131\uc790\n public Car(String brand, String color, int model) {\n this.brand = brand;\n this.color = color;\n this.model = model;\n }\n\n \/\/ \uba54\uc18c\ub4dc\n public void accelerate() {\n System.out.println(\"\ucc28\uac00 \uac00\uc18d\ud569\ub2c8\ub2e4.\");\n }\n }<\/code><\/pre>\n2. \uc0dd\uc131\uc790\ub780 \ubb34\uc5c7\uc778\uac00?<\/h2>\n
\uc0dd\uc131\uc790\ub294 \uac1d\uccb4\uac00 \uc0dd\uc131\ub420 \ub54c \ud638\ucd9c\ub418\ub294 \ud2b9\ubcc4\ud55c \uba54\uc18c\ub4dc\uc785\ub2c8\ub2e4. \uc0dd\uc131\uc790\uc758 \uc8fc\ub41c \uc5ed\ud560\uc740 \uac1d\uccb4\uc758 \ucd08\uae30\ud654\ub97c \ub2f4\ub2f9\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uc0dd\uc131\uc790\ub294 \ud074\ub798\uc2a4\uc758 \uc774\ub984\uacfc \ub3d9\uc77c\ud558\uba70, \ub9ac\ud134 \ud0c0\uc785\uc774 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n
2.1. \uc0dd\uc131\uc790\uc758 \uc885\ub958<\/h3>\n
\uc790\ubc14\uc5d0\uc11c \uc0dd\uc131\uc790\ub294 \ud06c\uac8c \ub450 \uac00\uc9c0\ub85c \uad6c\ubd84\ub429\ub2c8\ub2e4:<\/p>\n
\n- \uae30\ubcf8 \uc0dd\uc131\uc790 (Default Constructor)<\/strong>: \uc778\uc790\uac00 \uc5c6\ub294 \uc0dd\uc131\uc790\uc785\ub2c8\ub2e4. \ud074\ub798\uc2a4\uc758 \uc18d\uc131\uc744 \uae30\ubcf8\uac12\uc73c\ub85c \ucd08\uae30\ud654\ud569\ub2c8\ub2e4.<\/li>\n
- \ub9e4\uac1c\ubcc0\uc218 \uc0dd\uc131\uc790 (Parameterized Constructor)<\/strong>: \ub9e4\uac1c\ubcc0\uc218\ub97c \ubc1b\uc544\uc11c \uac1d\uccb4\uc758 \uc18d\uc131\uc744 \ucd08\uae30\ud654\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n
2.2. \uc0dd\uc131\uc790\uc758 \uc608\uc2dc<\/h3>\n
\uae30\ubcf8 \uc0dd\uc131\uc790\uc640 \ub9e4\uac1c\ubcc0\uc218 \uc0dd\uc131\uc790\ub97c \uc608\uc2dc\ub85c \ubcf4\uaca0\uc2b5\ub2c8\ub2e4:<\/p>\n
public class Car {\n String brand;\n String color;\n int model;\n\n \/\/ \uae30\ubcf8 \uc0dd\uc131\uc790\n public Car() {\n this.brand = \"\ubbf8\uc815\";\n this.color = \"\ubbf8\uc815\";\n this.model = 0;\n }\n\n \/\/ \ub9e4\uac1c\ubcc0\uc218 \uc0dd\uc131\uc790\n public Car(String brand, String color, int model) {\n this.brand = brand;\n this.color = color;\n this.model = model;\n }\n }<\/code><\/pre>\n3. \ud074\ub798\uc2a4\uc640 \uc0dd\uc131\uc790\ub97c \ud65c\uc6a9\ud55c \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c<\/h2>\n
\uc774\uc81c \ud074\ub798\uc2a4\uc640 \uc0dd\uc131\uc790\uc758 \uac1c\ub150\uc744 \ubc14\ud0d5\uc73c\ub85c \uac04\ub2e8\ud55c \uc548\ub4dc\ub85c\uc774\ub4dc \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \ub9cc\ub4e4\uc5b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc774 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc740 \uc790\ub3d9\ucc28\uc758 \uc815\ubcf4\ub97c \uc785\ub825\ud558\uace0 \ucd9c\ub825\ud558\ub294 \uae30\ub2a5\uc744 \uac00\uc9d1\ub2c8\ub2e4.<\/p>\n
3.1. \uc548\ub4dc\ub85c\uc774\ub4dc \uc2a4\ud29c\ub514\uc624 \ud504\ub85c\uc81d\ud2b8 \uc0dd\uc131<\/h3>\n
\uc548\ub4dc\ub85c\uc774\ub4dc \uc2a4\ud29c\ub514\uc624\ub97c \uc2e4\ud589\ud558\uace0 \uc0c8\ub85c\uc6b4 \ud504\ub85c\uc81d\ud2b8\ub97c \uc0dd\uc131\ud569\ub2c8\ub2e4. ‘Empty Activity’\ub97c \uc120\ud0dd\ud558\uace0 ‘MainActivity’\ub77c\ub294 \uc774\ub984\uc73c\ub85c \uc124\uc815\ud569\ub2c8\ub2e4.<\/p>\n
3.2. MainActivity.java \ucf54\ub4dc \uc608\uc81c<\/h3>\n
MainActivity.java \ud30c\uc77c\uc5d0 \ub2e4\uc74c \ucf54\ub4dc\ub97c \ucd94\uac00\ud558\uc5ec \uc790\ub3d9\ucc28 \uc815\ubcf4\ub97c \uc785\ub825\ubc1b\uace0 \ucd9c\ub825\ud558\ub294 \uc571\uc744 \ub9cc\ub4ed\ub2c8\ub2e4:<\/p>\n
package com.example.carapp;\n\n import androidx.appcompat.app.AppCompatActivity;\n import android.os.Bundle;\n import android.view.View;\n import android.widget.Button;\n import android.widget.EditText;\n import android.widget.TextView;\n\n public class MainActivity extends AppCompatActivity {\n\n private EditText inputBrand, inputColor, inputModel;\n private TextView outputText;\n private Button submitButton;\n\n @Override\n protected void onCreate(Bundle savedInstanceState) {\n super.onCreate(savedInstanceState);\n setContentView(R.layout.activity_main);\n\n inputBrand = findViewById(R.id.inputBrand);\n inputColor = findViewById(R.id.inputColor);\n inputModel = findViewById(R.id.inputModel);\n outputText = findViewById(R.id.outputText);\n submitButton = findViewById(R.id.submitButton);\n\n submitButton.setOnClickListener(new View.OnClickListener() {\n @Override\n public void onClick(View v) {\n String brand = inputBrand.getText().toString();\n String color = inputColor.getText().toString();\n int model = Integer.parseInt(inputModel.getText().toString());\n\n Car car = new Car(brand, color, model);\n outputText.setText(\"\uc790\ub3d9\ucc28 \uc815\ubcf4:\\n\ube0c\ub79c\ub4dc: \" + car.brand + \"\\n\uc0c9\uc0c1: \" + car.color + \"\\n\ubaa8\ub378: \" + car.model);\n }\n });\n }\n }<\/code><\/pre>\n3.3. activity_main.xml \ub808\uc774\uc544\uc6c3 \uc124\uc815<\/h3>\n
activity_main.xml \ud30c\uc77c\uc5d0 \ub2e4\uc74c UI \uc694\uc18c\ub97c \ucd94\uac00\ud569\ub2c8\ub2e4:<\/p>\n
<LinearLayout xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"\n android:layout_width=\"match_parent\"\n android:layout_height=\"match_parent\"\n android:orientation=\"vertical\"\n android:padding=\"16dp\">\n\n <EditText\n android:id=\"@+id\/inputBrand\"\n android:layout_width=\"match_parent\"\n android:layout_height=\"wrap_content\"\n android:hint=\"\ube0c\ub79c\ub4dc \uc785\ub825\"\/>\n\n <EditText\n android:id=\"@+id\/inputColor\"\n android:layout_width=\"match_parent\"\n android:layout_height=\"wrap_content\"\n android:hint=\"\uc0c9\uc0c1 \uc785\ub825\"\/>\n\n <EditText\n android:id=\"@+id\/inputModel\"\n android:layout_width=\"match_parent\"\n android:layout_height=\"wrap_content\"\n android:hint=\"\ubaa8\ub378 \uc785\ub825\"\/>\n\n <Button\n android:id=\"@+id\/submitButton\"\n android:layout_width=\"wrap_content\"\n android:layout_height=\"wrap_content\"\n android:text=\"\uc81c\ucd9c\"\/>\n\n <TextView\n android:id=\"@+id\/outputText\"\n android:layout_width=\"wrap_content\"\n android:layout_height=\"wrap_content\"\n android:paddingTop=\"20dp\"\/>\n\n <\/LinearLayout><\/code><\/pre>\n4. \ud074\ub798\uc2a4\uc640 \uc0dd\uc131\uc790\uc758 \ud65c\uc6a9<\/h2>\n
\uc704\uc758 \uc608\uc81c\ub97c \ud1b5\ud574 \ud074\ub798\uc2a4\uc640 \ub9e4\uac1c\ubcc0\uc218 \uc0dd\uc131\uc790\uc758 \uc791\ub3d9 \ubc29\uc2dd\uc744 \uc774\ud574\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc0ac\uc6a9\uc790\uac00 \uc790\ub3d9\ucc28\uc758 \ube0c\ub79c\ub4dc, \uc0c9\uc0c1, \ubaa8\ub378\uc744 \uc785\ub825\ud558\uba74, \uc0c8\ub85c\uc6b4 Car \uac1d\uccb4\uac00 \uc0dd\uc131\ub418\uace0, \ud574\ub2f9 \uc815\ubcf4\uac00 \ud14d\uc2a4\ud2b8 \ubdf0\uc5d0 \ucd9c\ub825\ub429\ub2c8\ub2e4. \uac1d\uccb4 \uc9c0\ud5a5 \ud504\ub85c\uadf8\ub798\ubc0d\uc758 \uc7a5\uc810\uc740 \uc774\ub7ec\ud55c \ubc29\uc2dd\uc73c\ub85c \ucf54\ub4dc\ub97c \uc7ac\uc0ac\uc6a9\ud558\uace0, \uac1d\uccb4\ub97c \ud1b5\ud574 \ub370\uc774\ud130\uc640 \uae30\ub2a5\uc744 \ud6a8\uc728\uc801\uc73c\ub85c \uad00\ub9ac\ud560 \uc218 \uc788\ub2e4\ub294 \uc810\uc785\ub2c8\ub2e4.<\/p>\n
5. \uacb0\ub860<\/h2>\n
\uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \uc790\ubc14\uc5d0\uc11c \ud074\ub798\uc2a4\uc640 \uc0dd\uc131\uc790\uc758 \uac1c\ub150\uc744 \uae4a\uc774 \uc788\uac8c \uc0b4\ud3b4\ubcf4\uc558\uc2b5\ub2c8\ub2e4. \ud074\ub798\uc2a4\uc640 \uc0dd\uc131\uc790\ub294 \uac1d\uccb4 \uc9c0\ud5a5 \ud504\ub85c\uadf8\ub798\ubc0d\uc758 \uc911\ucd94\uc801\uc778 \uc5ed\ud560\uc744 \ud558\uba70, \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc5d0 \ud544\uc218\uc801\uc778 \uc694\uc18c\uc785\ub2c8\ub2e4. \ud5a5\ud6c4 \uac15\uc88c\uc5d0\uc11c\ub294 \ub354\uc6b1 \ub2e4\uc591\ud55c \uae30\ub2a5\uacfc \uc608\uc81c\ub4e4\uc744 \ub2e4\ub8f0 \uc608\uc815\uc774\ub2c8, \uae30\ub300\ud574 \uc8fc\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4. Happy Coding!<\/p>\n
<\/body><\/p>\n","protected":false},"excerpt":{"rendered":"