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Panda Core is the core module of Panda Framework, it contains commonly used utility classes similar to apache-commons.

There is a newer version: 1.8.0

package panda.el.opt.bit;

import panda.el.ELContext;
import panda.el.opt.AbstractTwoOpt;

/**
 * Left Shift: <<
 */
public class LeftShift extends AbstractTwoOpt {
	public int getPriority() {
		return 5;
	}

	public Object calculate(ELContext ec) {
		Integer lval = (Integer)getLeft(ec);
		Integer rval = (Integer)getRight(ec);
		if (isReturnNull(ec, lval, rval)) {
			return null;
		}
		return lval << rval;
	}

	public String operator() {
		return "<<";
	}

}