filter.java

java版的位图处理

import java.io.*;
public class Filter implements FileFilter
{
	private String extensions[];
    private String description;
	public Filter(String description,String extension)
	{
		this(description,new String[]{extension});
	}
	public Filter(String description,String extensions[])
	{
		this.description=description;
		this.extensions=(String[])extensions.clone();
	}
	public boolean accept(File file)
	{
		if(file.isDirectory()){
			return true;
		}
		int count=extensions.length;
		String path=file.getAbsolutePath();
		for(int i=0;i<count;i++)
		{
			String ext=extensions[i];
			if(path.endsWith(ext) && (path.charAt(path.length()-ext.length())=='.')){
				return true;
			}
		}
		return false;
	}
	public String getDescription(){
		return (description==null? extensions[0]:description );
	}
	
}