java - Inifinte Recursive loop I can't Solve? -

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i developing program recursively generates frequencies of tones in scale. each frequency twelfth root of 2 higher previous one. program must use recursion (ugh, education). when use method, initial tone repeated on , on , on again. why that?

public static void scale(double x, double z){ double y;   if(z == x){      y = z * math.pow(2, (1/12));      system.out.println(y);      scale (y, y);     }    else if(z >= (2 * x) - 1 || z <= (2 * x) + 1){      y = z;      system.out.println();    }    else{      y = z * math.pow(2, (1/12));      scale (y, y);    }   system.out.println(y); }

why that?

because of java's integer division. specifically, 1/12 becomes 0, not 0.083333333, because int must yielded. 2 raised power 0 1 , y same z.

use double literals force floating-point division.

1.0/12.0

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