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Thread: Complex Numbers in Java

  1. #1
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    Default Complex Numbers in Java

    Hello Everyone,

    I am new to programming in Java. Been a Matlab programmer for the past 8-9 years. I have a question (This might look like a very dumb question to many of you Java programmers)?

    Let say Z(n) is an array of complex number defined as (3+4*i)/(9-(7*i)*n); where for simplicity n=0,1,23,.....9;

    T(n) is an array of complex number defined as (2.25-(9*i)*n)/(8+11.34*i); where n=0,1,23,.....9;


    1. Now how do i store this complex numbers into an array using Java?

    I prefer using a "for" loop
    for (int n=0, n<10,n++){
    Z[n]=(3+4*i)/(9-(7*i)*n);}

    But i know Java don't recognize "i" which is sqrt(-1). How to go about creating a Z array then?


    2. Next, how do i find the product of Z*T; lets say Z is saved as "nx1" vector (matrix) and T is saved as "1xn" vector (matrix)? I want the result to be "nxn" matrix.


    I have looked at Michael Flanagan's Java library on Complex (Michael Thomas Flanagan's Java Scientific and Numerical Library), but still can't figure out. Any suggestions would be greatly appreciated.

    Thanks!
    Derrick


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Complex Numbers in Java

    You've sort of hidden you posting in the Member Introduction part of the forum.
    I have no mathematical training and can't help you with the theory part of your problem.
    I don't know of any complex number classes in Java, but there could be some. Java is continually adding new classes.

    Only suggestion is to use Google and see what comes up.

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