I just don't know where to start, and what to do now, if you have some suggestions please help me out

Here is a problem:

Write a program that prints a chart to the screen showing the randomness of the random number generator. The program should prompt the user for a number and then call the random number generator this user inputted number of times. The program should then put the random numbers generated into ten "boxes" corresponding to each tenth of the range of the random numbers. ( If the random number generator behaves in a truly random fashion, each time you run the program the chart should look a little different reflecting the randomness of the random number generator.) After your program can do a chart with numbers, add the code to draw a graph that shows the numbers displayed as asterisks. Keep in mind that you have two System methods: System.out.println () and System.out.prin (). The first prints a new line and the second doesn't

A sample graph may look like this
Please enter the number of times that you would like to call the random numbers generator: 100
The chart showing 100 calls to the random number generator is:
0 - .1 **********
.1 -.2 ********
.2 -.3**********
.3 -.4*******
.4 -.5*****
.5 -.6**********
.6 -.7****
.7 -.8************
.8 -.9*******
.9-10 *******

double num = Math,random(); // gives a random number 0 <= num <1