Cracking the AP Computer Science a Exam, 2020 Edition by The Princeton Review

Author:The Princeton Review
Language: eng
Format: epub
Publisher: Random House Children's Books
Published: 2020-01-13T16:00:00+00:00

Use the following incomplete class declarations to answer Questions 6 and 7.

public class Number

{

private int value;

public Number(int someNum)

{

if (someNum >= 0)

value = someNum;

}

public int changeVal(int newVal)

{

/ * missing code * /

}

public int getValue()

{

return value;

}

}

public class NumChanger

{

public void change()

{

Number n1 = new Number(5);

Number n2 = new Number(5);

int sum1 = n1.getValue() + n2.getValue();

int oldn1Val = n1.changeValue(10);

n2 = n1;

int sum2 = n1.getValue() + n2.getValue();

System.out.print(sum1 + “ ” + sum2);

}

//other methods not shown

}

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