In Java, a variable can only be used in a program if it has first been: - ☑☑Declared
the do while loop repeats a set of code at least once before the condition is tested - ☑☑True
The following definition of class B
...
In Java, a variable can only be used in a program if it has first been: - ☑☑Declared
the do while loop repeats a set of code at least once before the condition is tested - ☑☑True
The following definition of class Bank:
public class Mortgage{
static double interestRate;
interestRate=0.06; - ☑☑b)Will not compile
The area of memory that objects reside in is known as the stack - ☑☑False
In Java a variable can only be used in a program if it has first been - ☑☑a)Declared
What is the output of the following code?
public class Test{
public static void main (String[ ]args){
String s1 = new String ('Welcome to java");
String s2 = new String("Welcome to Java");
If (S1==S2)
System.out.pritnln("s1 and s2 reference to the same String object"); - ☑☑b)s1 and s2 reference to different String objects
In Java, Gargbage Collection is the process that reclaims the memory used by objects which are no longer in use - ☑☑True
What are formal parameters? - ☑☑a)Formal parameters are found in the subroutine definition, The values of the actual parameters are assigned to the formal parameters before the body of the subroutine is excused
A computer is built to carry out instructions that are written in a type of language called binary language. - ☑☑True
The for loop repeats a set of statements a certain number of times until a condition is matched - ☑☑True
A memory location that has been given a name is called a: - ☑☑a)variable
Examine the following class
public class PatientRecord{
public String lastname; // Patients last name
public int age;// Patients age on admission
public boolean sex;// indicates if patient is male of female
}
initial values of lastname, age and sex instance variables will be: - ☑☑b)null, 0, false
Which of the following is NOT a primitive data type - ☑☑d)String
Consider the following code, which output is correct?
Public class Student{
int age;
static int age 2=3;
public static void main (String [ ] args){
Student student1;
Student student2;
Student student3;
student1= new Student ( );
student1.age=10;
student2= student1;
student3 = new Student( );
System.out.println(student2.age+ " "+ student3.age2);
}
} - ☑☑a)10 3
The following code represents a syntactically valid switch statement?
Int x;
x=;5
switch (x){
case :
break;
case:
break;
default:
System.out.ptintln("The choice was not found")
} - ☑☑True
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