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rommmurommmu
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chap02 변수와 자료형
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11 files changed

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‎src/chap02/BinaryTest.java‎

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package chap02;
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public class BinaryTest {
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public static void main(String[] args) {
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int num = 10;
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int bNum = 0B1010; // 2진수
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int oNum = 012; // 8진수
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int hNum = 0XA; // 16진수
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System.out.println(num);
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System.out.println(bNum);
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System.out.println(oNum);
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System.out.println(hNum);
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}
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}

‎src/chap02/BinaryTest2.java‎

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package chap02;
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public class BinaryTest2 {
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public static void main(String[] args) {
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int num1 = 0B00000000000000000000000000000101; // 5
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int num2 = 0B11111111111111111111111111111011; // -5
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int sum = num1 + num2;
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System.out.println(num1);
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System.out.println(num2);
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System.out.println(sum);
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}
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}

‎src/chap02/BooleanEx.java‎

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package chap02;
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public class BooleanEx {
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public static void main(String[] args) {
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boolean isMarried = true;
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System.out.println(isMarried);
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}
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}

‎src/chap02/ByteVariable.java‎

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package chap02;
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public class ByteVariable {
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public static void main(String[] args) {
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byte bData = -128;
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System.out.println(bData);
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byte bData2 = 127;
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System.out.println(bData2);
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}
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}

‎src/chap02/CharacterEx.java‎

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package chap02;
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public class CharacterEx {
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public static void main(String[] args) {
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char ch = 'A';
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System.out.println(ch);
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System.out.println((int)ch);
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ch = 66;
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System.out.println(ch);
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int ch2 = 67;
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System.out.println(ch2);
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System.out.println((char)ch2);
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}
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}

‎src/chap02/Constant.java‎

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package chap02;
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public class Constant {
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public static void main(String[] args) {
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final int MAX_NUM = 100;
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final double PI = 3.14;
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final int STUDENT_NUM = 30;
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System.out.println(MAX_NUM);
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System.out.println(PI);
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System.out.println(STUDENT_NUM);
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}
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}

‎src/chap02/Double.java‎

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package chap02;
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public class Double {
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public static void main(String[] args) {
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double dNum = 3.14;
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float fNum = 3.14F;
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System.out.println(dNum);
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System.out.println(fNum);
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}
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}

‎src/chap02/ExplicitConversion.java‎

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package chap02;
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public class ExplicitConversion {
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public static void main(String[] args) {
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int iNum = 1000;
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byte bNum = (byte)iNum;
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System.out.println(iNum);
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System.out.println(bNum);
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double dNum = 3.14;
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iNum = (int)dNum;
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System.out.println(dNum);
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System.out.println(iNum);
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}
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}

‎src/chap02/ImplicitConversion.java‎

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package chap02;
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public class ImplicitConversion {
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public static void main(String[] args) {
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byte bNum = 10;
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int num = bNum;
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System.out.println(num);
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long lNum = 10;
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float fNum = lNum;
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System.out.println(fNum);
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double dNum = fNum + num;
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System.out.println(dNum);
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}
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}

‎src/chap02/VariableEx.java‎

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package chap02;
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public class VariableEx {
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public static void main(String[] args) {
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int num;
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num = 10;
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System.out.println(num);
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int level = 20;
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System.out.println(level);
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}
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}

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