Is it a right conversion from java to matlab? I am getting error. I am new on matlab and confused on functions.

 // Java code
 public static void xp_system(int n,double t,double[x],int i){
  // differential equation
    k[1][i]= -3*x[2];
    k[2][i]= (1/3)* x[1];
 }
// matlab code
 function xp(n,t,x,i) 
 int8 n;
 k(1,i)=3*x(2); // too many input argument 
 k(2,i)=(1/3)*x(1); // too many input argument
 end

[Walter Roberson]

The second line, int8, is not needed

You need to add 1 to all of the indices, because Java indexing starts at 0, so k[1][i] is indexing the i+1 element of the second part of k

[Muhtasim Ahmed]

so write k(1,i+1) and k(2,i+1)?

[Walter Roberson]

k(1+1,i+1) = 3*x(2+1);
k(2+1,i+1) = (1/3) * x(1+1);

I suspect the code has a bug in it, but it is difficult to say as it does not declare k and does not appear to return anything.