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Answer:
The method is as follows:
public static void randomStar(Random r, int num) {
int n;
do {
n = 5 + r.nextInt(15);
for(int count = 0; count < n; count++){
System.out.print("*");
}
System.out.println();
} while(n < num);
}
Explanation:
This defines the method
public static void randomStar(Random r, int num) {
This declares n as integer
int n;
The following is repeated until n >= num
do {
This generates a random number for n (5 and 19)
n = 5 + r.nextInt(15);
The following loop prints n *'s
for(int count = 0; count < n; count++){
System.out.print("*");
}
This prints n
System.out.println();
} while(n < num); The loop is repeated as long as the condition is valid
}