ÆäÀÌÁö |
À§Ä¡ |
¿ÀÅ»ÀÚ ³»¿ë |
29 |
±×¸² 01-29 ¿À¸¥ÂÊ ºÎºÐ
|
[Java Program] [Java Program]
JVM ´Ù¸£´Ù!
[Windows JVM] <-------------->[ Linux JVM ]
OS ´Ù¸£¸é
[ Windows ] <-------------->[ Windows ]
[ Hardware ] <-------------->[ Hardware ]
--->
[Java Program] [Java Program]
JVM ´Ù¸£´Ù!
[Windows JVM] <-------------->[ Linux JVM ]
OS ´Ù¸£¸é
[ Windows ] <-------------->[ Linux ]
[ Hardware ] <-------------->[ Hardware ]
|
29 |
¾Æ·¡¿¡¼ 3¹øÂ° ÁÙ
|
¾Õ¼ ¼Ò°³ÇßµíÀÌ Javac.exe´Â ÀÚ¹Ù ÄÄÆÄÀÏ·¯´Ù. ±×·¸´Ù¸é Java.exe´Â ¹«¾ùÀϱî?
--->
¾Õ¼ ¼Ò°³ÇßµíÀÌ javac.exe´Â ÀÚ¹Ù ÄÄÆÄÀÏ·¯´Ù. ±×·¸´Ù¸é java.exe´Â ¹«¾ùÀϱî?
|
92 |
À§¿¡¼ 8¹øÂ° ÁÙ
|
double e1 = 3.5;
double e2 = -e1; e1¿¡ ÀúÀåµÇ´Â °ªÀº -3.5
--->
double e1 = 3.5;
double e2 = -e1; e2¿¡ ÀúÀåµÇ´Â °ªÀº -3.5
|
104 |
IEBasic.javaÀÇ 8Çà
|
System.out.println("n1 > n2 is true");
--->
System.out.println("n1 < n2 is true");
|
105 |
½ÇÇà °á°ú : IEBasic.java ÀÇ 3¹øÂ° ÁÙ
|
C:\JavaStudy > java IEBasic
n1 > n2 is true
n1 == n2 is false
C:\JavaStudy >
--->
C:\JavaStudy > java IEBasic
n1 < n2 is true
n1 == n2 is false
C:\JavaStudy >
|
106 |
À§¿¡¼ 11¹øÂ° ÁÙ
¾Æ·¡¿¡¼ 2¹øÂ° ÁÙ
|
***106 page À§¿¡¼ 11¹øÂ°***
if(n1 < n2) {
System.out.println(" n1 > n2 is true"); // n1 < n2 ÀÌ¸é ½ÇÇàµÇ´Â ¹®Àå
--->
if(n1 < n2) {
System.out.println(" n1 < n2 is true"); // n1 < n2 ÀÌ¸é ½ÇÇàµÇ´Â ¹®Àå
***106 page ¾Æ·¡¿¡¼ 2¹øÂ°***
if(n1 < n2)
System.out.println(" n1 > n2 is true");
--->
if(n1 < n2)
System.out.println(" n1 < n2 is true");
|
116 |
¾Æ·¡¿¡¼ 4¹øÂ° ÁÙ
|
SwitchBasic.java
--->
SwitchBreak.java
|
123 |
±×¸² 05-10 ¿ÞÂÊ ºÎºÐ
|
¨é À» Ãß°¡ÇÕ´Ï´Ù.
|
124 |
±×¸² 05-11
|
³× ¹øÂ° ·çÇÁÀÇ È帧 [i=3]
¨è i=3 À̹ǷΠŻÃâ!
--->
³× ¹øÂ° ·çÇÁÀÇ È帧 [i=3]
¨è i´Â 3À̹ǷΠŻÃâ!
|
161 |
À§¿¡¼ 7¹øÂ° ÁÙ
|
BankAccount myAcnt; // ÂüÁ¶º¯¼ö myAcountÀÇ ¼±¾ð
--->
BankAccount myAcnt; // ÂüÁ¶º¯¼ö myAcntÀÇ ¼±¾ð
|
161 |
À§¿¡¼ 10, 11¹øÂ° ÁÙ
¾Æ·¡¿¡¼ 2, 3¹øÂ° ÁÙ
|
***161 page À§¿¡¼ 10, 11¹øÂ°***
1. BankAccunt myAcnt1; // ÂüÁ¶º¯¼ö myAcnt1 ¼±¾ð
2. BankAccunt myAcnt2; // ÂüÁ¶º¯¼ö myAcnt2 ¼±¾ð
--->
1. BankAccount myAcnt1; // ÂüÁ¶º¯¼ö myAcnt1 ¼±¾ð
2. BankAccount myAcnt2; // ÂüÁ¶º¯¼ö myAcnt2 ¼±¾ð
***161 page ¾Æ·¡¿¡¼ 2, 3¹øÂ°***
BankAccunt myAcnt1; = new BankAccount();
BankAccunt myAcnt2; = new BankAccount();
--->
BankAccount myAcnt1; = new BankAccount();
BankAccount myAcnt2; = new BankAccount();
|
184 |
¾Æ·¡¿¡¼ 11, 12¹øÂ° ÁÙ
|
Java.net Ŭ·¡½º CookieManager°¡ ¼ÓÇÑ ÆÐŰÁöÀÇ À̸§
ÀÏ´Ü ÆÐŰÁö À̸§ÀÌ Java·Î ½ÃÀÛÇÑ´Ù.
--->
java.net Ŭ·¡½º CookieManager°¡ ¼ÓÇÑ ÆÐŰÁöÀÇ À̸§
ÀÏ´Ü ÆÐŰÁö À̸§ÀÌ java·Î ½ÃÀÛÇÑ´Ù.
|
189 |
À§¿¡¼ 6¹øÂ° ÁÙ, 11¹øÂ° ÁÙ
¾Æ·¡¿¡¼ 3¹øÂ° ÁÙ
|
C:\PackageStudy>Javac -d <directory> <filename>
C:\PackageStudy>Javac -d . src\circle1\Circle.java
C:\PackageStudy>Javac -d . src\circle2\Circle.java
--->
C:\PackageStudy>javac -d <directory> <filename>
C:\PackageStudy>javac -d . src\circle1\Circle.java
C:\PackageStudy>javac -d . src\circle2\Circle.java
|
191 |
¾Æ·¡¿¡¼ 2¹øÂ° ÁÙ
|
Circle.classs¸¦ ã¾Æ¼ ÀνºÅϽº¸¦ »ý¼ºÇÑ´Ù.
--->
Circle.class¸¦ ã¾Æ¼ ÀνºÅϽº¸¦ »ý¼ºÇÑ´Ù.
|
203, 204, 205, 208, |
203page ¾Æ·¡¿¡¼ 3¹øÂ°
204page À§¿¡¼ 2¹øÂ°
205page ¾Æ·¡¿¡¼ 1¹øÂ°, 3¹øÂ°
208page ¾Æ·¡¿¡¼ 5¹øÂ°, 7¹øÂ°
|
***203page ¾Æ·¡¿¡¼ 3¹øÂ°***
C:\JavaStudy>Javac -d . Cat.java
--->
C:\JavaStudy>javac -d . Cat.java
***204page À§¿¡¼ 2¹øÂ°***
C:\JavaStudy>Javac -d . Dog.java
--->
C:\JavaStudy>javac -d . Dog.java
***205page ¾Æ·¡¿¡¼ 1¹øÂ°, 3¹øÂ° ***
C:\JavaStudy>Javac -d . Cat.java
ÀÌ¾î¼ ´ÙÀ½°ú °°ÀÌ Dog.java¸¦ ÄÄÆÄÀÏ ÇÑ´Ù.
C:\JavaStudy>Javac -d . Dog.java
--->
C:\JavaStudy>javac -d . Cat.java
ÀÌ¾î¼ ´ÙÀ½°ú °°ÀÌ Dog.java¸¦ ÄÄÆÄÀÏ ÇÑ´Ù.
C:\JavaStudy>javac -d . Dog.java
***208page ¾Æ·¡¿¡¼ 5¹øÂ°, 7¹øÂ°***
C:\JavaStudy>Javac -d . AAA.java
±×¸®°í ÀÌ¾î¼ ´ÙÀ½°ú °°ÀÌ ZZZ.java¸¦ ÄÄÆÄÀÏÇÑ´Ù. ~~~~~~~~~~
C:\JavaStudy>Javac ZZZ.java
--->
C:\JavaStudy>javac -d . AAA.java
±×¸®°í ÀÌ¾î¼ ´ÙÀ½°ú °°ÀÌ ZZZ.java¸¦ ÄÄÆÄÀÏÇÑ´Ù. ~~~~~~~~~~
C:\JavaStudy>javac ZZZ.java
|
213 |
OneClassEncapsulation.javaÀÇ 4Çà
|
void sniTake() {
System.out.println("Ä๰ÀÌ ½Ï ~ ³³´Ï´Ù.");
--->
void sniTake() {
System.out.println("Ä๰ÀÌ ½Ï ~ ³³´Ï´Ù.");
}
|
229, 230, 232, 233, 235, 236 |
229page À§¿¡¼ 2, 4¹øÂ° ÁÙ
230page À§¿¡¼ 1¹øÂ°
230page ¾Æ·¡¿¡¼ 4¹øÂ° ÁÙ
232page Áß°£ºÎºÐ
233page ¾Æ·¡¿¡¼ 3, 4,7¹øÂ° ÁÙ
235page DateOfExecution.javaÀÇ 1¹øÂ° ÁÙ
235page ¾Æ·¡¿¡¼ 3¹øÂ° ÁÙ
236page À§¿¡¼ 1, 3, 7, 10¹øÂ° ÁÙ
236page StaticImport.javaÀÇ 1¹øÂ° ÁÙ
|
***229page À§¿¡¼ 2, 4¹øÂ° ÁÙ***
ÀÏ´Ü SystemÀº ÀÚ¹Ù¿¡¼ Á¦°øÇϴ Ŭ·¡½º·Î Java.lang ÆÐŰÁö¿¡ ¹¿© ÀÖ´Ù. µû¶ó¼ ¿øÄ¢ÀûÀ¸·Î´Â ´ÙÀ½°ú °°ÀÌ È£ÃâÇØ¾ß ÇÑ´Ù.
Java.lang.System.out.println( . . .);
--->
ÀÏ´Ü SystemÀº ÀÚ¹Ù¿¡¼ Á¦°øÇϴ Ŭ·¡½º·Î java.lang ÆÐŰÁö¿¡ ¹¿© ÀÖ´Ù. µû¶ó¼ ¿øÄ¢ÀûÀ¸·Î´Â ´ÙÀ½°ú °°ÀÌ È£ÃâÇØ¾ß ÇÑ´Ù.
java.lang.System.out.println( . . .);
***230page À§¿¡¼ 1¹øÂ° ÁÙ***
import Java.lang.*;
--->
import java.lang.*;
***230page ¾Æ·¡¿¡¼ 4¹øÂ° ÁÙ***
C:\JavaStudy > Java MyMainClass
--->
C:\JavaStudy > java MyMainClass
***232page Áß°£ºÎºÐ***
C:\JavaStudy > Java Car
--->
C:\JavaStudy > java Car
***233page ¾Æ·¡¿¡¼ 7¹øÂ° ÁÙ***
C:\JavaStudy > Java Boat
--->
C:\JavaStudy > java Boat
***233page ¾Æ·¡¿¡¼ 3, 4¹øÂ° ÁÙ***
C:\JavaStudy > Java Car
C:\JavaStudy > Java Boat
--->
C:\JavaStudy > java Car
C:\JavaStudy > java Boat
***235page DateOfExecution.javaÀÇ 1¹øÂ° ÁÙ***
import Java.time.LocalDate;
--->
import java.time.LocalDate;
***235page ¾Æ·¡¿¡¼ 3¹øÂ° ÁÙ***
±×·±µ¥ ÀÌ °ªÀº Ŭ·¡½º Java.lang.Math¿¡ ½ÇÁ¦·Î Ŭ·¡½º º¯¼ö·Î
--->
±×·±µ¥ ÀÌ °ªÀº Ŭ·¡½º java.lang.Math¿¡ ½ÇÁ¦·Î Ŭ·¡½º º¯¼ö·Î
*** 236page À§¿¡¼ 1~3¹øÂ° ÁÙ ***
ÆÐŰÁö À̸§ Java.langÀ» »ý·«Çϰí Math.PI·Î Á¢±ÙÀÌ °¡´ÉÇÏ´Ù.
import Java.lang.*;
--->
ÆÐŰÁö À̸§ java.langÀ» »ý·«Çϰí Math.PI·Î Á¢±ÙÀÌ °¡´ÉÇÏ´Ù.
import java.lang.*;
*** 236page À§¿¡¼ 7¹øÂ° ÁÙ ***
import static Java.lang.Math.PI;
--->
import static java.lang.Math.PI;
***236page À§¿¡¼ 10¹øÂ° ÁÙ ***
import static Java.lang.Math.*;
--->
import static java.lang.Math.*;
***236page StaticImport.javaÀÇ 1¹øÂ° ÁÙ***
import static Java.lang.Math.*;
--->
import static java.lang.Math.*;
|
315 |
¾Æ·¡¿¡¼ 15¹øÂ° ÁÙ
|
class BusinessMan extends Man{
String company;
String position;
public BusinessMan( String name, String company, String position ) {
--->
class BusinessMan extends Man{
String company;
String position;
public BusinessMan( String company, String position ) {
|
381 |
À§¿¡¼ 1¹øÂ° ÁÙ
¾Æ·¡¿¡¼ 6¹øÂ° ÁÙ
|
***** À§¿¡¼ 1¹øÂ° ÁÙ *****
@Override
public abstract void methodTwo(); //Ãß»ó¸Þ¼Òµå
}
--->
public abstract void methodTwo(); //Ãß»ó¸Þ¼Òµå
}
***** ¾Æ·¡¿¡¼ 6¹øÂ° ÁÙ *****
public class MyHouse extends House {
public void methodTwo() {
--->
public class MyHouse extends House {
@Override
public void methodTwo() {
|
437 |
¾Æ·¡¿¡¼ 9¹øÂ° ÁÙ
|
return = super.clone();
} // Person Ŭ·¡½ºÀÇ ÇÕ¸®ÀûÀÎ clone ¿À¹ö¶óÀ̵ù
--->
return super.clone(); = »èÁ¦
} // Person Ŭ·¡½ºÀÇ ÇÕ¸®ÀûÀÎ clone ¿À¹ö¶óÀ̵ù
|
444 |
BoxingUnboxing.java ÀÇ 11, 12Çà
|
System.out.println(iObj);
System.out.println(dObj);
--->
System.out.println(num1);
System.out.println(num2);
|
514 |
¾Æ·¡¿¡¼ 10¹øÂ° ÁÙ
|
¿ì¸®´Â À§ÀÇ ¹®ÀåÀ» º¸¸é¼ makeBox ¸Þ¼Òµå´Â Box<integer>
--->
¿ì¸®´Â À§ÀÇ ¹®ÀåÀ» º¸¸é¼ makeBox ¸Þ¼Òµå´Â Box<Integer>
|
525 |
À§¿¡¼ 1¹øÂ° ÁÙ
|
public static void outBox( Box<? extends Toy> box) {
--->
public static void outBox( Box<Toy> box) {
|
556 |
¾Æ·¡¿¡¼ 15¹øÂ° ÁÙ
|
for(Iterator itr = list.iterator(); itr.hasNext(); )
System.out.print(itr.next() + '\t');
--->
for(Iterator<String> itr = list.iterator(); itr.hasNext(); )
System.out.print(itr.next() + '\t');
|
610 |
¾Æ·¡¿¡¼ 3¹øÂ° ÁÙ
|
"List<t> ¾Æ´Ï°í List<? extends T>ÀÎ ÀÌÀ¯´Â list¿¡ TÇü ÀνºÅϽº¸¦ ³Ö±â¸¸ Çϱâ À§ÇØ"
--->
"List<t> ¾Æ´Ï°í List<? extends T>ÀÎ ÀÌÀ¯´Â list¿¡¼ TÇü ÀνºÅϽº¸¦ ²¨³»´Â °Í¸¸ Çã¿ëÇϱâ À§ÇØ"
|
655 |
AnonymousComparator.javaÀÇ 13Çà
|
StrComp cmp = new StrComp() {
--->
Comparator<String> cmp = new Comparator<String> () {
|
657 |
Lambda2.java ÀÇ 7Çà
|
Printable prn = new Printer() { //À͸í Ŭ·¡½º
--->
Printable prn = new Printable() { //À͸í Ŭ·¡½º
|
664 |
664ÆäÀÌÁö Áß°£ºÎºÐ
|
µû¶ó¼ ±× µÚ¸¦ ¾î¾î ¶÷´Ù¿¡ ´ëÇÑ ¼³¸íÀ» °è¼Ó À̾°Ú´Ù.
--->
µû¶ó¼ ±× µÚ¸¦ ÀÌ¾î ¶÷´Ù¿¡ ´ëÇÑ ¼³¸íÀ» °è¼Ó À̾°Ú´Ù.
|
697 |
À§¿¡¼ 2¹øÂ° ÁÙ
À§¿¡¼ 4¹øÂ° ÁÙ
À§¿¡¼ 12¹øÂ° ÁÙ
À§¿¡¼ 13¹øÂ° ÁÙ
|
ÂüÁ¶º¯¼ö si´Â effectively finalÀÌ´Ù.
¿Ö³ÄÇϸé ÀÌ °æ¿ì ÂüÁ¶º¯¼ö si°¡ effectively finalÀÌ ¾Æ´Ï±â ¶§¹®ÀÌ´Ù.
main ¸Þ¼ÒµåÀÇ ¸¶Áö¸· ¹®Àå¿¡¼ si¿¡ nullÀ» ´ëÀÔÇØµµ ÄÄÆÄÀÏ ¿À·ù·Î À̾îÁø´Ù. ÀÌÀ¯´Â ¸¶Âù°¡Áö·Î si°¡ effectively finalÀÌ ¾Æ´Ï±â ¶§¹®ÀÌ´Ù.
--->
ÂüÁ¶º¯¼ö js´Â effectively finalÀÌ´Ù.
¿Ö³ÄÇϸé ÀÌ °æ¿ì ÂüÁ¶º¯¼ö js°¡ effectively finalÀÌ ¾Æ´Ï±â ¶§¹®ÀÌ´Ù.
main ¸Þ¼ÒµåÀÇ ¸¶Áö¸· ¹®Àå¿¡¼ js¿¡ nullÀ» ´ëÀÔÇØµµ ÄÄÆÄÀÏ ¿À·ù·Î À̾îÁø´Ù. ÀÌÀ¯´Â ¸¶Âù°¡Áö·Î js°¡ effectively finalÀÌ ¾Æ´Ï±â ¶§¹®ÀÌ´Ù.
|
764 |
À§¿¡¼ 4¹øÂ° ÁÙ
|
À§ ¹®ÀåÀÇ ¶÷´Ù½Ä¿¡¼´Â ±¹¿µ, ¿µ¾î, ¼öÇÐ Á¡¼ö·Î ÀÌ·ç¾îÁø ½ºÆ®¸²À»
--->
À§ ¹®ÀåÀÇ ¶÷´Ù½Ä¿¡¼´Â ±¹¾î, ¿µ¾î, ¼öÇÐ Á¡¼ö·Î ÀÌ·ç¾îÁø ½ºÆ®¸²À»
|
804 |
ZonedDateTimeDemo2.javaÀÇ 8Çà, 13Çà
|
// Çѱ¹ Ãâ¹ß 2017-09-09 14:30
// ÆÄ¸® µµÂø 2017-09-09 17:25
--->
// Çѱ¹ Ãâ¹ß 2017-12-09 14:30
// ÆÄ¸® µµÂø 2017-12-09 17:25
|
839 |
¾Æ·¡¿¡¼ 1¹øÂ° ÁÙ
|
FileOutputStream
--->
FilterOutputStream
|
887 |
À§¿¡¼ 4¹øÂ° ÁÙ
|
synchronized public void increment() {
--->
public void increment() {
|