Assign an operator symbol to a variable and use that variable for conditional check [duplicate]

Question

Can I assign an operator symbol to a variable and use that variable for a conditional check?

char operator= '>';
int val1=10;
int val2=24;
if(val2 operator val1){

    /* some code*/

}

Why cant I use the operator variable inside conditions?

Answer 1

Hey Thats not supported I think this will make sense to me.

The compiler reads in the operator when it builds your app. It has no way of knowing what the operator would be so it cant build correclty which I found in http://www.daniweb.com/software-development/csharp/threads/266385/c-using-operator-as-a-variable-in-calculations

They are talking in the context of C#, but I feel same thing makes sense here as well.

You cannot directly do that, but there are work arounds:

http://www.coderanch.com/t/568212/java/java/arithmetic-operations-operator-stored-variables

If thats really required, we have to use eval sort of thing in our code. I just tried this sample code.

package dumb;

import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;

public class OperatorAsVariable
{
    public static void main( String args[] ) throws ScriptException
    {
        String test = "+";
        System.out.println( 1 + test + 2 );
        ScriptEngineManager manager = new ScriptEngineManager();
        ScriptEngine engine = manager.getEngineByName( "js" );
        System.out.println( engine.eval( 1 + test + 2 ) );
    }

}

Courtesy : Is there an eval() function in Java?