decrementa.java

来自「mylanguage(大学作业)」· Java 代码 · 共 36 行

JAVA
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////  IncrementaRegistro.java////  Created by Dario Malchiodi on Jan 04 2006.//  Copyright (c) 2006 DSI. All rights reserved.//import java.util.*;public class Decrementa extends Istruzione {    private String variabile;    private int decremento;    public Decrementa(String v, int decr) {        variabile = new String(v);        decremento = decr;    }    public void esegui() throws ExecutionException {        if(memoria.get(variabile) == null) throw new InvalidVariableException(variabile);        if(decremento<=0) throw new InvalidDecrementException(decremento);        Integer val = (Integer)memoria.get(variabile);        memoria.put(variabile,new Integer(val.intValue()-decremento));    }        public Object clone() {        return new Decrementa(variabile, decremento);    }        public String toString() {        return indenta() + variabile + " -= " + decremento + ";\n";    }}

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