FIT1051 Programming fundamentals in java - MUM S1 2025
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Suppose you have a Java class, Student, which needs to keep track of an ID number for each student object that is created. This ID number needs to be different for each student, but once it has been assigned to a particular student, its value should not be changed.
What is the best way of defining and initialising the ID variable?
Constant (final) variables in Java can be...
Suppose the following methods are defined in some class:
public int someMethod(int x) { return x + someOtherMethod(x); }
public static int someOtherMethod(int y)
{ return y * z; }
Assume that the rest of the surrounding class has been defined correctly, and that z is the name of a non-static field variable in that class.
What, if anything, is wrong with this code?
Suppose the following method is defined in some class:
public int someMethod(int x) { return x + z; }
Assume that the rest of the surrounding class has been defined correctly, and that z is the name of a static field variable in that class.
What, if anything, is wrong with this code?
Consider the following partial code for some Java class:
public class Person
{
public static final int MAX_PEOPLE;
public Person()
{
/* ... rest of class continues here... */
Assume the remainder of the class is defined correctly. What, if anything, is the biggest problem with this portion of code?
Consider the following partial code for some Java class:
public class Person
{
public static final int maxPeople = 10;
public Person()
{
/* ... rest of class continues here... */
Assume the remainder of the class is defined correctly. What, if anything, is the biggest problem with this portion of code?
Suppose the following methods are defined in some class:
public int someMethod(int x) { return x + someOtherMethod(x); }
public static int someOtherMethod(int y)
{ return y * z; }
Assume that the rest of the surrounding class has been defined correctly, and that z is the name of a static field variable in that class.
What, if anything, is wrong with this code?
Which of the following is true with respect to static variables.
Choose all that apply.
Suppose the following methods are defined in some class:
public static int someMethod(int x) { return x + someOtherMethod(x); }
public int someOtherMethod(int y)
{ return y * z; }
Assume that the rest of the surrounding class has been defined correctly, and that z is the name of a static field variable in that class.
What, if anything, is wrong with this code?
Which of the following statements is not true about responsibility-driven design?
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