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Thread: Printing from a Method

  1. #1
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    Default Printing from a Method

    My last post was kind of buggy, so heres this one. My code will not print method printTrigTables, but it prints the other two declared in main
    /*
     * To change this template, choose Tools | Templates
     * and open the template in the editor.
     */
    package mathtables;
     
    /**
     *
     * @author student
     */
    public class MathTables {
     
     
        public static void main(String[] args) {
            double a1;
            double a2;
            double a3;
            double a4;
            double a5;
            double a6;
            double a7;
            double a8;
            double a9;
            double a10;
            double a11;
            double a12;
            a1 = 1;
            a2 = 1;
            a3 = 1;
            a4 = 1;
            a5 = 1;
            a6 = 1;
            a7 = 1;
            a8 = 1;
            a9 = 1;
            a10 = 1;
            a11 = 1;
            a12 = 1;
     
            printCommonLogTable();
            printAdditionTable ();
            printTrigTables(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12);
     
        }
     
        public static void printCommonLogTable () {
            double x = .5;
            while (x < 10.0) {
                System.out.println(x + "  " + Math.log(x));
                x = x + .5;
            }
     
     
        }
        public static void printAdditionTable () {
     
            System.out.println("+ 0 1 2 3 4 5 6 7 8 9");
            System.out.println("0 0 1 2 3 4 5 6 7 8 9");
            System.out.println("1 1 2 3 4 5 6 7 8 9 10");
            System.out.println("2 2 3 4 5 6 7 8 8 9 11");
            System.out.println("3 3 4 5 6 7 8 8 9 10 11 12");
            System.out.println("4 4 5 6 7 8 9 10 11 12 13");
            System.out.println("5 5 6 7 8 9 10 11 12 13 14");
            System.out.println("6 6 7 8 9 10 11 12 13 14 15");
            System.out.println("7 7 8 9 10 11 12 13 14 15 16");
            System.out.println("8 8 9 10 11 12 13 14 15 16 17");
            System.out.println("9 9 10 11 12 13 14 15 16 17 18");
     
     
        }
        public static void printTrigTables (double a1, double a2, double a3, double a4,
                double a5, double a6, double a7, double a8, double a9, double a10, double a11,
                double a12) {
            // Need to print sin, cos, tan of angles between 0-360
            // in 30 degree increments
            // Radians = Degrees * PI / 180
     
     
     
            System.out.print("Angle 30");
            a1 = 30 * 2 * Math.PI/360;
            System.out.println ("cos(" + a1 + ") is " + Math.acos(a1));
            System.out.println ("sin(" + a1 + ") is " + Math.asin(a1));
            System.out.println("tan(" + a1 + ") is " + Math.atan(a1));
            System.out.print("Angle 60");
            a2 = 60 * 2 * Math.PI/360;
            System.out.println("cos(" + a2 + ") is " + Math.acos(a2)) ;
            System.out.println("sin(" + a2 + ") is " + Math.asin(a2));
            System.out.println("tan(" + a2 + ") is " + Math.atan(a2));
            System.out.print("Angle 90");
            a3 = 90 * 2 * Math.PI/360;
            System.out.println("cos(" + a3 + ") is " + Math.acos(a3)) ;
            System.out.println("sin(" + a3 + ") is " + Math.asin(a3));
            System.out.println("tan(" + a3 + ") is " + Math.atan(a3));
            System.out.print("Angle 120");
            a4 = 120 * 2 * Math.PI/360;
            System.out.println("cos(" + a4 + ") is " + Math.acos(a4));
            System.out.println("sin(" + a4 + ") is " + Math.asin(a4));
            System.out.println("tan(" + a4 + ") is " + Math.atan(a4));
            System.out.print("Angle 150");
            a5 = 150 * 2 * Math.PI/360;
            System.out.println("cos(" + a5 + ") is " + Math.acos(a5));
            System.out.println("sin(" + a5 + ") is " + Math.asin(a5));
            System.out.println("tan(" + a5 + ") is " + Math.atan(a5));
            System.out.print("Angle 180");
            a6 = 180 * 2 * Math.PI/360;
            System.out.println("cos(" + a6 + ") is " + Math.acos(a6));
            System.out.println("sin(" + a6 + ") is " + Math.asin(a6));
            System.out.println("tan(" + a6 + ") is " + Math.atan(a6));
            System.out.print("Angle 210");
            a7 = 210 * 2 * Math.PI/360;
            System.out.println("cos (" + a7 + ") is " + Math.acos(a7));
            System.out.println("sin (" + a7 + ") is " + Math.asin(a7));
            System.out.println("tan (" + a7 + ") is " + Math.atan(a7));
            System.out.print("Angle 240");
            a8 = 240 * 2 * Math.PI/360;
            System.out.println("cos (" + a8 + ") is " + Math.acos(a8));
            System.out.println("sin (" + a8 + ") is " + Math.asin(a8));
            System.out.println("tan (" + a8 + ") is " + Math.atan(a8));
            System.out.print("Angle 270");
            a9 = 270 * 2 * Math.PI/360;
            System.out.println("cos (" + a9 + ") is " + Math.acos(a9));
            System.out.println("sin (" + a9 + ") is " + Math.asin(a9));
            System.out.println("tan (" + a9 + ") is " + Math.atan(a9));
            System.out.print("Angle 300");
            a10 = 300 * 2 * Math.PI/360;
            System.out.println("cos (" + a10 + ") is " + Math.acos(a10));
            System.out.println("sin (" + a10 + ") is " + Math.asin(a10));
            System.out.println("tan (" + a10 + ") is " + Math.atan(a10));
            System.out.print("Angle 330");
            a11 = 330 * 2 * Math.PI/360;
            System.out.println("cos (" + a11 + ") is " + Math.acos(a11));
            System.out.println("sin (" + a11 + ") is " + Math.asin(a11));
            System.out.println("tan (" + a11 + ") is " + Math.atan(a11));
            System.out.print("Angle 360");
            a12 = 360 * 2 * Math.PI/360;
            System.out.println("cos (" + a12 + ") is " + Math.acos(a12));
            System.out.println("sin (" + a12 + ") is " + Math.asin(a12));
            System.out.println("tan (" + a12 + ") is " + Math.atan(a12));
     
     
        }
     
        ;
     
     
    }


  2. #2
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    Default Re: Printing from a Method

    Any idea of why it's not picking that up?

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    Default Re: Printing from a Method

    Does the program finish running, or does it hang? Also, you seem to have a rogue ; floating in limbo.

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    Default Re: Printing from a Method

    Yeah I fixed the ; , but it does finish running. It doesn't act as though its picking up the call in main.

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    Default Re: Printing from a Method

    The code looks like it should work to me, perhaps try adding System.out.flush() at the end to make sure its not stuck in stdout... Are you running it in an IDE or on the command line?

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    Default Re: Printing from a Method

    Im running it in netBeans IDE, flush didn't seem to help, any other ideas? :/

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    Default Re: Printing from a Method

    Quick question about your sin, cos, and etc, you're using Math.a[....] which is the arc[....]. Were you intending this? or did you just want Math.cos and etc?

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    Default Re: Printing from a Method

    Ill change that atm Act.

  9. #9
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    Default Re: Printing from a Method

    Still didn't change any output.

  10. #10
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    Default Re: Printing from a Method

    must say I am at a loss. Ill try running it for myself later(when Im at home) if you haven't figured it out by then. You don't need to be declaring all those doubles in main, but that wouldn't effect printl.

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    Default Re: Printing from a Method

    Works for me...I'd suggest deleting the current class file, recompile, and then run the new class file.

  12. #12
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    Default Re: Printing from a Method

    Thanks copeg, it worked for some reason if I just deleted it all

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