자바 개선된 for 루프(Java ForLoop) 예제,[자바JSP/Servlet/JDBC/MiPlatform/XPlatform/교육/JSP/서블릿강좌/Spring교육잘하는곳/자바,JSP/spring/교육추천/JSP/JDBC실무교육]

자바 개선된 for 루프(Java ForLoop) 예제,[자바JSP/Servlet/JDBC/MiPlatform/XPlatform/교육/JSP/서블릿강좌/Spring교육잘하는곳/자바,JSP/spring/교육추천/JSP/JDBC실무교육]

자바 개선된 for 루프(Java ForLoop) 예제, 자바공부 열심히 하세요. 책도 많이 보시구요,

아래 예제 및 결과를 참고 하세요...

package onj;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

public class ForTest {

static int[] squares = { 0, 1, 4, 9, 16, 25 };

private static List arrayList = new ArrayList();

private static void fill() {

for (int i = 0; i < 5; i++) {

arrayList.add(i);

}

}

static void forDisplay1() {

for (int i = 0; i < squares.length; i++) {

System.out.printf("%d squared is %d.\n", i, squares[i]);

}

}

static void forDisplay2() {

int j = 0;

for (int i : squares) {

System.out.printf("%d squared is %d.\n", j++, i);

}

}

static void arrayListDisplay1() {

for (int i = 0; i < arrayList.size(); i++) {

System.out.printf("%d arrayList is %d.\n", i, arrayList.get(i));

}

}

static void arrayListDisplay2() {

Iterator iterator = arrayList.iterator();

int j = 0;

for (; iterator.hasNext();) {

System.out.printf("%d arrayList is %d.\n", j++, iterator.next());

}

}

static void arrayListDisplay3() {

int j = 0;

for (Object i : arrayList) {

System.out.printf("%d arrayList is %d.\n", j++, i);

}

}

public static void main(String[] args) {

forDisplay1();

System.out.println("---------------------");

forDisplay2();

System.out.println("---------------------");

fill();

arrayListDisplay1();

System.out.println("---------------------");

arrayListDisplay2();

System.out.println("---------------------");

arrayListDisplay3();

}

}

[결과]

0 squared is 0.

1 squared is 1.

2 squared is 4.

3 squared is 9.

4 squared is 16.

5 squared is 25.

---------------------

0 squared is 0.

1 squared is 1.

2 squared is 4.

3 squared is 9.

4 squared is 16.

5 squared is 25.

---------------------

0 arrayList is 0.

1 arrayList is 1.

2 arrayList is 2.

3 arrayList is 3.

4 arrayList is 4.

---------------------

0 arrayList is 0.

1 arrayList is 1.

2 arrayList is 2.

3 arrayList is 3.

4 arrayList is 4.

---------------------

0 arrayList is 0.

1 arrayList is 1.

2 arrayList is 2.

3 arrayList is 3.

4 arrayList is 4.

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