Exam 7: User-Defined Methods

public class scopeRule //Line 1 { //Line 2 Static double intRate = 0.055; //Line 3 Static String name; //Line 4 Static int t; //Line 5 public static int main(String[] args) //Line 6 { //Line 7 Int first; //Line 8 Double u, t; //Line 9 String str; //Line 10 //... //Line 11 } //Line 12 public static int first(int x, int y) //Line 13 { //Line 14 Int t; //Line 15 //... //Line 16 } public static double salary; //Line 17 public static void funcOne(int first, double x) //Line 18 { //Line 19 Char ch; //Line 20 Int y; //Line 21 //block one //Line 22 { //Line 23 Int u = 18; //Line 24 //... //Line 25 } //end block one //Line 26 } //Line 27 } //Line 28Which of the following identifiers seen in the accompanying figure is visible in method first?

public class scopeRule //Line 1 { //Line 2 Static double intRate = 0.055; //Line 3 Static String name; //Line 4 Static int t; //Line 5 public static int main(String[] args) //Line 6 { //Line 7 Int first; //Line 8 Double u, t; //Line 9 String str; //Line 10 //... //Line 11 } //Line 12 public static int first(int x, int y) //Line 13 { //Line 14 Int t; //Line 15 //... //Line 16 } public static double salary; //Line 17 public static void funcOne(int first, double x) //Line 18 { //Line 19 Char ch; //Line 20 Int y; //Line 21 //block one //Line 22 { //Line 23 Int u = 18; //Line 24 //... //Line 25 } //end block one //Line 26 } //Line 27 } //Line 28Which of the following identifiers seen in the accompanying figure is NOT visible in method funcOne?

If a formal parameter is a variable of a primitive data type, then after copying the value of the actual parameter, there is no connection between the formal and actual parameter.

When a program executes, the first statement to execute is always the first statement in the main method.

An identifier can be declared anywhere including within a class, and outside of every method definition (and every block).

What is an actual parameter?

Java allows the programmer to declare a variable in the initialization statement of the for statement.

How can a method send a primitive value back to the caller?

Strings assigned to StringBuffer variables can be altered.

Which of the following is NOT true about return statements?

Void methods use the return statement to return the value 0.

Void methods must have at least one parameter.

Within a method, an identifier used to name a variable in the outer block of the method can be used to name any other variable in an inner block of the method.

public static double secret(int first, double second) { Double temp; if (second > first) Temp = first * second; Else Temp = first - second; return temp; }Which of the following is NOT part of the heading of the method in the accompanying figure?

To use a predefined method, you must know the code in the body of the method.

The signature of a method consists of only its formal parameter list.

public static double secret(int first, double second) { Double temp; if (second > first) Temp = first * second; Else Temp = first - second; return temp; }What is the return type of the method in the accompanying figure?

public static char methodHeading(int n, double num)Which of the following statements about the method heading in the accompanying figure is NOT true?

In order to use the method isUpperCase of the class Character, the package java.lang must be explicitly imported.

public int mystery(int x, int y) { If (x >= y) Return x - y; Else Return x + y; }Based on the code in the accompanying figure, what would be the output of the following statement?System.out.println(mystery(8,7));