Text book : Java from control structures through objects edition 6 Author: Tony Gaddis Pearson MyProgramLab Chapter 5 20658: Write the definition of a method  powerTo, which receives two parameters . The first is a double  and the second is an int . The method  returns adouble . If the second parameter  is negative, the method  returns zero. Otherwise it returns the value  of the first parameter  raised to the power of the second parameter . 20574: Write the code for invoking a method  named  sendNumber . There is one int  argument  for this method . Send the number 5 as an argument  to this method . Assume  that sendNumber is defined in the same class  that calls it. 20575: Write the code for invoking a method  named  sendVariable. There is one int  argument  for this method .  Assume  that an int  variable  called x has already  been declared  and initialized  to some value . Use this variable 's value  as an argument  in yourmethod  invocation. Assume  that sendVariable is defined in the same class  that calls it. 20576: Write the code for invoking a method  named  sendTwo. There are two arguments  for this method : a double  and an int . Invoke the method  with the double  value  of 15.955 and the int  value  of 133. Assume  that sendTwo is defined in the same class  that calls it. 20644: printErrorDescription is a method  that accepts one int  argument  and returns no value . Write a statement  that invokes the method  printErrorDescription, passing it the value  14. Assume  that printErrorDescription is defined in the same class  that calls it. 20645: printLarger is a method  that accepts two int  arguments  and returns no value . Two int  variables , sales1 and sales2, have already  been declared  and initialized . Write a statement  that calls printLarger, passing it sales1 and sales2. Assume  that printLarger is defined in the same class  that calls it. 20646: add is a method  that accepts two int  arguments  and returns their sum . Two int  variables , euroSales and asiaSales, have already  been declared  and initialized . Another int  variable , eurasiaSales, has already  beendeclared . Write a statement  that calls add to compute the sum  of euroSales and asiaSales and that stores  this value  in eurasiaSales. Assume  that add is defined in the same class  that calls it. 20647: toThePowerOf is a method  that accepts two int  arguments  and returns the value  of the first parameter  raised to the power of the second. An int  variable  cubeSide has already  been declared  and initialized . Another int  variable , cubeVolume, has already  been declared . Write a statement  that calls toThePowerOf to compute the value  of cubeSide raised to the power of 3 and that stores  this value  in cubeVolume. Assume  that toThePowerOf is defined in the same class  that calls it. 21155: printStars is a method  that accepts a single int  argument  and returns no value . It prints as many stars as indicated by its argument . Given  a variable  x of type  double  that has been given  a value , write a statement  that invokes printStars passing x as an argument . Assume  that printStars is defined in the same class  that calls it. 21017: Given  that a method  receives three parameters  a, b, c, of type  double , write some code, to be included as part of the method , that determineswhether  the value  of "b squared" – 4ac is negative. If negative, the code prints out the message  "no real solutions" and returns from the method  20604: Write a method  max that has two string  parameters  and returns the larger  of the two. 20605: Write a method  min that has three string  parameters  and returns the smallest. 20840: Write a method , makeSubjectLine, that gets a String  argument  and returns the same String  but with "Subject: " in front of it. So if the argument  is "Are you going to the show?" the method  returns "Subject: Are you going to the show?".  20660: Given  the integer  variables  x, y, and z, write a fragment of code that assigns  the smallest of x, y, and z to another integer  variable  min. Assume  that all the variables  have already  been declared  and that x, y, and z have been assigned  values . 21015: Assume  that x is a variable  that has been declared  as an int  and been given  a value . Assume  that twice is a method  (in the same class  as the caller) that receives a single integer  parameter  and returns twice its value . (So if you pass 7 to twice it will return 14. Thus the expression twice(7) has the value  14.  Write an expression  whose value  is eight times that of x without using the standard Java arithmetic operators  (*,+, etc.). Instead, use calls to twiceto accomplish this.  In this exercise you must write this as a single expression -- you must not write any statements . Also, you may only use the twice() function-- no other functions or operators .  21016: Assume  that x is a variable  that has been declared  as an int  and been given  a value . Assume  that oneMore is a function that receives a singleinteger  parameter  and returns a value  that is one greater than  its argument . (So if you pass 7 to oneMore it will return 8. Thus, the expression oneMore(9) has the value  10.  Write an expression  whose value  is four more than x without using the standard Java arithmetic operators  (*,+, etc.). Instead, use calls tooneMore to accomplish this.  In this exercise you must write this as a single expression -- you must not write any statements . Also, you may only use the oneMore function-- no other functions or operators .  20648: max is a method  that accepts two int  arguments  and returns the value  of the larger  one. Two int  variables , population1 and population2, have already  been declared  and initialized . Write an expression  (not a statement !) whose value  is the larger  of population1 and population2 by calling max. Assume  that max is defined in the same class  that calls it. 20649: max is a method  that accepts two int  arguments  and returns the value  of the larger  one. Four int  variables , population1, population2, population3, and population4 have already  been declared  and initialized . Write an expression  (not a statement !) whose value  is the largest of population1, population2, population3, and population4 by calling max. Assume  that max is defined in the same class  that calls it. 21154: The Math class  provides a static  method , max, that accepts two int  arguments  and returns the value  of the larger  one. Four int  variables , population1, population2, population3, and population4 have already  been declared  and initialized . Write an expression  (not a statement !) whose value  is the largest of population1, population2, population3, and population4 by calling max. 21153: The Math class  provides a static  method , max, that accepts two int  arguments  and returns the value  of the larger  one. Two int  variables ,population1 and population2, have already  been declared  and initialized . Write an expression  (not a statement !) whose value  is the larger  of population1 and population2 by calling max. 21014: Assume  that x is a variable  that has been declared  as a double  and been given  a value .  Write an expression  to compute the quartic root of x. The quartic root of a number is the square root of its square root.  EXAMPLES: For example, the quartic root of 16.0 is 2.0 because: the square root of 16.0 is 4.0 and the square root of 4.0 is 2.0. Another example: the quartic root of 81.0 is 3.0 because the square root of 81.0 is 9.0 and the square root of 9.0 is 3.0. Thus, to find the quartic root of a number you take the square root of the number and then take the square root of that.  In this exercise you must find the quartic root of x in a single expression -- you must not write any statements . Also, you may only use the sqrt()static  method  defined in the Math class -- no other methods .  (HINT: you will need to call the Math.sqrt() method  twice-- and you will need to pass the return value  of one of those calls as argument  to the other call. AND REMEMBER: write an expression , not a statement .) 73084: A showChar Method   Write a method  named  showChar. The method  should accept two arguments : a reference  to a String  object  and an integer . The integer  argument  is a character  position within the String , with the first character  being at position 0. When the method  executes, it should display the character  at that character  position. The method  does not return anything. Here is an example of a call to the method : showChar("New York", 2); In this call, the method  will display the character  w because it is in position 2. Demonstrate the method  in a complete program .  73085: Test Average and Grade Write a program  that asks the user to enter five test scores. The program  should display a letter grade for each score and the average test score. Write the following methods  in the program : calcAverage: This method  should accept five test scores as arguments  and return the average of the scores. determineGrade: This method  should accept a test score as an argument  and return a letter grade for the score, based on the following grading scale: Score Letter Grade 90-100 A 80-89 B 70-79 C 60-69 D Below 60 F