How to use Java.lang.Math to calculate; Advice programming

Question

Hi, all!
I am trying to teach myself Java, and am using the MindQ CDs to do it. I'm dreadfully stuck on this one exercise, and I could use some help figuring out how to properly call a Math method, store the variables, and print the results. I've programmed other methods successfully before; for some reason I just can't figure this one out. I've tried about fifty different configurations; maybe I can get some good advice here? Thanks!
import java.io.*;
import java.util.Random;
import java.lang.Math;
public class JavaCalcs {
    public static void main(String args[]) {
        System.out.println("Starting JavaComputations...");
        //main method variable declarations
        int z, y, x, w;
        int A = -12;
        int B = 2;
        z = A & B;
        y = A | B;
        x = A >> B;
        w = A >>> B;
        System.out.println(z + ";" + y + ";" + x + ";" + w + ";");
        Random kickassRNG = new Random();
        double rDOne = kickassRNG.nextDouble() * 90.0;
        double rDTwo = kickassRNG.nextDouble() * 90.0;
        System.out.println("rDOne= " + rDOne);
        System.out.println("rDTwo= " + rDTwo);
//NOTE-EVERYTHING WORKS FINE UNTIL THIS POINT...
        if (rDOne > rDTwo)
        System.out.println("The larger of the 2 degs. is rDOne");
        //compute ceiling.
        double a=rDOne; //Store the value of rDOne.
        public static double ceil(double a);
        return a;
        System.out.println( "the ceiling of rDOne is " + a );
        //convert degree measurement to radians.     
        public static double toRadians(double b);
        double b = a;
        System.out.println("rDOne in radians is " + b );
        //compute tangent of that result.
        public static double tan(double c);
        double c = b;
        System.out.println("The tangent of rDOne is " + c );
        else
        System.out.println("The larger of the 2 degs. is rDTwo");
        //compute ceiling.
        double a=rDTwo; //Store the value of rDOne.
        public static double ceil(double a);
        return a;
        System.out.println( "the ceiling of rDTwo is " + a );
        //convert degree measurement to radians.     
        public static double toRadians(double b);
        double b = a;
        System.out.println("rDTwo in radians is " + b );
        //compute tangent of that result.
        public static double tan(double c);
        double c = b;
        System.out.println("The tangent of rDTwo is " + c );
    } //end main method.
}

Answer 1

VERY useful link..thxYou're welcome. Here are some more:
Sun's basic Java tutorial
Sun's New To Java Center. Includes an overview of what Java is, instructions for setting up Java, an intro to programming (that includes links to the above tutorial or to parts of it), quizzes, a list of resources, and info on certification and courses.
http://javaalmanac.com. A couple dozen code examples that supplement The Java Developers Almanac.
jGuru. A general Java resource site. Includes FAQs, forums, courses, more.
JavaRanch. To quote the tagline on their homepage: "a friendly place for Java greenhorns." FAQs, forums (moderated, I believe), sample code, all kinds of goodies for newbies. From what I've heard, they live up to the "friendly" claim.
Bruce Eckel's Thinking in Java (Available online.)
Joshua Bloch's Effective Java
Bert Bates and Kathy Sierra's Head First Java.
James Gosling's The Java Programming Language. Gosling is
the creator of Java. It doesn't get much more authoratative than this.