Dealing With Mathmatical Functions In Java

[JustnK101]

Is there a variable type function in java? I need to be able to deal with functions like matlab does. For example:

function x = "X^2";

Then evauluate the function at a point, for example:

x(10);

is this possible?

[jkd]

What's wrong with doing:

public double f(double x) {
return x*x;
}

System.out.println(f(10));

?

[JustnK101]

Because I have more complicated functions... But actually I don't need to be able to do that, I will just hardcode the function, but a more important question and something i need to be able to do is operations like:


double sinResult = sin(a);
float powResult = pow(sinResult , 2);
float p1 = 1 + powResult;
sinResult = sin(p1);
powResult = pow(sinResult, 2);
float p2 = 1 + powResult;


I am getting parse errors. Can I not plug variables into the math functions? If not, then how the heck am I suppose to do stuff like this?

[JustnK101]

What the hell is wrong with java math? I cant even get the following to work.


import java.lang.Math;

class assignment3
{
public void steffensens(double a, int b) {

int i = 1;

while(i <= b)
{
System.out.println(sin(a));
i++;
}
}

public assignment3() {
steffensens(1.0, 5);
}

public static void main(String[] args) {
new assignment3();
}
}

[JPM]

change sin(a) to Math.sin(a)

[punx]

http://java.sun.com/j2se/1.4.2/docs/api/

search for the MATH class