자바 관련 과제 하는데... 내가 공부를 안해서 하나도 몰라 ㅠㅠ

아래 문제 4개 있는데 실행결과 좀 알려주면 정말 고마울거 같아...

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1번문제

public class ExerciseCh1_6_2 {

public static void main(String[] args) {

int i = 1, j = 0, k;

try {

System.out.printIn("Exception Checking..");

k = j / j;

System.out.printIn("After Exception throwing..");

} catch (ArithmeticException e) {

System.out.printIn("Caught Exception..");

} finally {

System.out.printIn("In the finally statement..");

}

}

}



2-1번문제

public class ExerciseCh4_7_2

static final int N = 10;

public static void main(String[] args) {

int i,j;

for (i=1; i<N; i++) {

for (j=1; j<n-i; j++) System.out.print(\' \');

for (j=1; j<=i; j++)

if (j==1) System.out.print(\'*\');

else System.out.print(\' \');

for (j=1; j<=1;, j++)

if (j==i-1) System.out.print(\'*\');

else System.out.print(\' \');

system.out.printIn();

}

for (i=N-1; i>0; i--) {

for (j=i; j<N; j++) System.out.print(\' \');

for (j=1; j<=i-1; j++)

if (j==1) System.out.print (\'*\');

else System.out.print(\' \');

for (j=1; j<=i-2; j++)

if (j==i-2) System.out.print(\'*\');

else System.out.print(\' \');

System.out.printIn();

}

}

}

2-2번

public class ExerciseCh4_7_4 {

public static void main(String[] args) {

System.out.printf("%,7d/n", 1234);

System.out.printf("%-,7d/n", 1234);

System.out.printf("%(+-,9d/n",-1234);

System.out.printf("%(0,9d/n", -1234);

System.out.printf("%( -,9d/n", -1234);

}

}



3번문제

import java.util.*;

class Garbage {

Garbage() {

new Vector(2000);

}

protected void finalize() {

System.out.printIn("finalizer() invoked !!!");

}

}

public class ExerciseCh5_9_4 {

static void alloc() {

new Garbage();

}

public static void main(String[] args) {

for (int i = 0; i < 100; i++)

alloc();

}

}