《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(2)

}

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

A obj = new A(13, 23);

答案 b=13 b=13，a=23

2.

public class Test1 { } class AB { }

String s1; String s2;

AB(String str1, String str2) { }

public String toString() { }

return s1 + s2; s1 = str1; s2 = str2;

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

AB s = new AB(\System.out.println(s.toString());

答案 Hello!I love JAVA.

3.public class Test {

public static void main(String[] args) {

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

}

}

num1[0][1] = 9; num1[0][2] = 60; num1[1][0] = 78; num1[1][1] = 79; for (int i = 0; i <= 1; i++) { }

for (int j = 0; j < num1[i].length; j++)

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

System.out.println();

答案

3 9 60 78 79 0

4. public class Test {

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

int i, s = 0;

int a[] = { 10, 20, 30, 40, 50, 60, 70, 80, 90 }; for (i = 0; i < a.length; i++) }

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

s += a[i];

System.out.println(\

答案 s=30 s=90 s=180

5. public class Test3 {

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

} class A {

private int privateVar; public A(int _privateVar) { boolean isEqualTo(A anotherA) { } }

if (this.privateVar == anotherA.privateVar) else

return false;

return true;

privateVar = _privateVar; }

A a = new A(2);

A b = new A(3);

System.out.println(a.isEqualTo(b));

答案 false