/** * Int.java * @author Antonio J. Nebro * @version 1.0 */ package jmetal.base.variable; import jmetal.base.Configuration.*; import jmetal.base.Configuration; import jmetal.base.Variable; import jmetal.util.JMException; import jmetal.util.PseudoRandom; /** * This class implements an integer decision variable */ public class Int extends Variable { private int value_; //Stores the value of the variable private int lowerBound_; //Stores the lower limit of the variable private int upperBound_; //Stores the upper limit of the variable /** * Constructor */ public Int() { setVariableType(VariableType_.Int) ; lowerBound_ = java.lang.Integer.MIN_VALUE ; upperBound_ = java.lang.Integer.MAX_VALUE ; value_ = 0 ; } // Int /** * Constructor * @param lowerBound Variable lower bound * @param upperBound Variable upper bound */ public Int(int lowerBound, int upperBound){ setVariableType(VariableType_.Int) ; lowerBound_ = lowerBound; upperBound_ = upperBound; value_ = (int) (PseudoRandom.randDouble()*(upperBound-lowerBound)+ lowerBound); } // Int /** * Constructor * @param value Value of the variable * @param lowerBound Variable lower bound * @param upperBound Variable upper bound */ public Int(int value, int lowerBound, int upperBound) { super(); setVariableType(VariableType_.Int) ; value_ = value ; lowerBound_ = lowerBound ; upperBound_ = upperBound ; } // Int /** * Copy constructor. * @param variable Variable to be copied. * @throws JMException */ public Int(Variable variable) throws JMException{ setVariableType(VariableType_.Int) ; lowerBound_ = (int)variable.getLowerBound(); upperBound_ = (int)variable.getUpperBound(); value_ = (int)variable.getValue(); } // Int /** * Returns the value of the variable. * @return the value. */ public double getValue() { return value_; } // getValue /** * Assigns a value to the variable. * @param value The value. */ public void setValue(double value) { value = (int)value; } // setValue /** * Creates an exact copy of the Int object. * @return the copy. */ public Variable deepCopy(){ try { return new Int(this); } catch (JMException e) { Configuration.logger_.severe("Int.deepCopy.execute: JMException"); return null ; } } // deepCopy /** * Returns the lower bound of the variable. * @return the lower bound. */ public double getLowerBound() { return lowerBound_; } // getLowerBound /** * Returns the upper bound of the variable. * @return the upper bound. */ public double getUpperBound() { return upperBound_; } // getUpperBound /** * Sets the lower bound of the variable. * @param lowerBound The lower bound value. */ public void setLowerBound(double lowerBound) { lowerBound_ = (int)lowerBound; } // setLowerBound /** * Sets the upper bound of the variable. * @param upperBound The new upper bound value. */ public void setUpperBound(double upperBound) { upperBound_ = (int)upperBound; } // setUpperBound /** * Returns a string representing the object * @return The string */ public String toString(){ return value_+""; } // toString } // Int
