b. An int variable n contains a positive integer and a String variables contains a String. Write the Java code needed to print "YES" if the first n characters of s appear more than once in s, and print "NO" otherwise

7. A String variable sentence consists of words separated by single spaces.

Write the Java code needed to print the number of words that start with an upper case letter So for "The deed is done", your code would print 1 but for "The name is Bond, JAMES Bond"

vour code would print 4

3.0

Explain the following terms and give an example of each, where applicable

void method

d mutator

(c) accessor

(b value-returning methoa

(f) constructor

[e stale data

& new

) Chanter 6. Programming Challenge #7 (see p. 398)

Write a Circle Class that has the following fields:

radius: a double

PI: a final double initialized with the value 3.14159

Constructor. Accepts the radius of the circle as an argument

Constructor. A no-arg constructor that sets the radius field to 0.0. setRadius. A mutator method for the radius field. getradius. An accessor method for the radius field

getArea. Returns the area of the circle, which is calculated as area = PI * radius * radius.

getDiameter. Returns the diameter of the circle, which is calculated as diameter = radius * 2

getCircumference.

Returns the circumference of the circle, which is calculated as

circumference = 2 * PI * radius

Write a program that demonstrates the Circle class by asking the user for the radius of a circle (in a method), creating a circle object, and then reporting the circle's area, diameter, and circumference. See Rectangle example in book

Circle Template

public class Circle

}

public class CircleDemo

{

public static void main(String[] args)

}

Il end main public static double getInput0

{

}I end getinput

}// end CircleDemo