choiceitem.java

来自「一个较好的java开发实例」· Java 代码 · 共 81 行

/*
 * ChoiceItem.java
 *
 * Created on 2003年11月5日, 下午9:13
 */

package romulus;

/**
 *
 * @author  Romulus
 * @version 1.0
 */
public class ChoiceItem implements RomulusNode{
    
    /** The ident of the choice item.*/
    private String ident = null;
    
    /** The content of the choice item.*/
    private Content cont = null;
    
    /** The label of the choice item.*/
    private String label = null;
    
    /** true if the item is the correct choice item.*/
    private boolean is_corr = false;
    
    /** Creates a new instance of ChoiceItem */
    ChoiceItem(String ident, String label, boolean is_corr) throws RomulusException{
        if(ident == null){
            throw new RomulusException(RomulusException.IdentError);
        }
        this.ident = ident;
        this.label = label;
        this.is_corr = is_corr;
    }
    
    void setContent(Content c){
        this.cont = c;
    }
    
    /**Getter*/
    public String getIdent(){
        return this.ident;
    }
    
    public String getLabel(){
        return this.label;
    }
    
    public Content getContent(){
        return this.cont;
    }
    
    public boolean isCorrect(){
        return is_corr;
    }
    
    void setCorrect(boolean c){
        this.is_corr = c;
    }
    
    /** for choice to do the check use containsAll.*/
    public boolean equals(Object obj){
        if(!(obj instanceof ChoiceItem)){
            return false;
        }
        else if(((ChoiceItem)obj).ident == this.ident){
            return true;
        }
        return false;
    }
    
    /** The method used to accept the Visitor to do something. */
    public void Accept(Visitor v) throws java.sql.SQLException, RomulusException {
        v.VisitChoiceItem(this);
    }
    
}