《面向对象程序设计JAVA语言程序设计》期末考试试题及部分答案(3)

6. public class Test {

public static void main(String[] args) {

int[][] num1 = new int[2][3]; num1[0][0] = 3;

num1[0][1] = 9; num1[1][1] = 79;

num1[0][2] = 45;

num1[1][0] = 78;

for (int i = 0; i <= 1; i++) { }

int[][] num2 = new int[][] { { 1, 2, 3 }, { 7, 8 } ,{ 9 } }; for (int i = 0; i

for (int j = 0; j < num2[i].length; j++)

System.out.print(num2[i][j] + \for (int j = 0; j < num1[i].length; j++)

System.out.print(num1[i][j] + \

System.out.println();

}

}

}

System.out.println();

答案

3 9 45 78 79 0 1 2 3 7 8 9

7. public class Test2 {

public static void main(String[] agrs) { }

int i, s = 0;

int a[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9 }; for (i = 0; i < a.length; i++) }

if (a[i] % 3 == 0) { }

s += a[i];

System.out.println(\

答案 s=3 s=9 s=18

8. class B {

int b; B(int x) { }

b = x;

System.out.println(\

}

class A extends B {

int a;

A(int x, int y) { } }

public class Test { }

public static void main(String[] args) { }

A obj = new A(5, 10); super(x); a = y;

System.out.println(\，a=\

答案 b=5 b=5，a=10

9. public class Test4 {

public static void main(String[] agrs) { }

static void method() {

try {

wrench(); try {

method();

} catch (Exception e) {

System.out.println(\

} finally { }

System.out.println(\