JavaForm

JavaForm(expr)

returns the Symja Java form of the expr. In Java you can use the created Symja expressions.

JavaForm(expr, Float)

or

JavaForm(expr, Float->True)

returns the java.lang.Math form of the expr.

See:

• docs.oracle.com - java.lang.Math

Examples

JavaForm can add the F. prefix for class org.matheclipse.core.expression.F if you set Prefix->True:

>> JavaForm(D(sin(x)*cos(x),x), Prefix->True)
"F.Plus(F.Sqr(F.Cos(F.x)),F.Negate(F.Sqr(F.Sin(F.x))))"

>> JavaForm(I/2*E^((-I)*x)-I/2*E^(I*x))
"Plus(Times(CC(0L,1L,1L,2L),Power(E,Times(CNI,x))),Times(CC(0L,1L,-1L,2L),Power(E,Times(CI,x))))"

JavaForm evaluates its argument before creating the Java form:

>> JavaForm(D(sin(x)*cos(x),x))
"Plus(Sqr(Cos(x)),Negate(Sqr(Sin(x))))"

You can use Hold to suppress the evaluation:

>> JavaForm(Hold(D(sin(x)*cos(x),x)))
"D(Times(Sin(x),Cos(x)),x)"

>> JavaForm(Hold(D(sin(x)*cos(x),x)), prefix->True)
"F.D(F.Times(F.Sin(F.x),F.Cos(F.x)),F.x)"

Generate output for java.lang.Math double or float expressions:

>> JavaForm(E^3-Cos(Pi^2/x), Float)
Math.pow(Math.E,3)-Math.cos(Math.pow(Math.PI,2)/x)

Implementation status

• ✅ - full supported

Github

• Implementation of JavaForm