public static void test2() { MathFunc x = FX.x; MathFunc y = FX.y; MathFunc xy = x.M(y); System.out.println(xy); HashMap<String, MathFunc> map = new HashMap<String, MathFunc>(); map.put(x.getVarNames().get(0), FX.r.A(FX.s)); map.put(y.getVarNames().get(0), FX.r.S(FX.s)); MathFunc xy2 = xy.compose(map); System.out.println(xy2); System.out.println(FX.r.A(FX.s).M(FX.r.S(FX.s))); FuncClassLoader<CompiledFunc> fcl = new FuncClassLoader<CompiledFunc>(); ClassGen genClass = BytecodeUtils.genClass(xy2, null, "add2", true, false); CompiledFunc fxy2 = fcl.newInstance(genClass); System.out.println(fxy2.apply(4.0, 2.0)); }