substoperation.java

来自「呵呵.着是我JAVA东软培训,老师给个一个小的项目.是CMD窗口实现的.就是控制」· Java 代码 · 共 40 行

public class SubstOperation extends Operation{
	String order[];
	String param;
	String param1;
	String param2;
	boolean control=false;  //control the parameter for executing the method of execute();
	public SubstOperation(){
		
	}

	public void getCommand(String s[]){
		if(s.length==4){
			this.order=s;
			control=true;
		}else{
			control=false;
		}
	}
    public String execute(){
    	if(control==true){
	    	String s=null;  //the value of return;
	    	param=order[0];
	    	param1=order[2];
	    	param2=order[3];
	    	if(param.indexOf(param1)>=0){
		    	s=param.replaceAll(param1,param2);
		    	return s;
	    	}
	    	else{
	    		return "没有找到你要替换的字符！";
	    	}
    	}else{
    		return "参数不对！";
    	}	
	
	}  
	
    
	
}