java ²é¿´Îļþ¼ÐÏÂÃæËùÓÐÎļþÒÔ¼°Îļþ¼Ð
import java.io.File;
import java.util.Date;
import java.util.Iterator;
import java.util.Vector;
import java.text.SimpleDateFormat;
public class FileViewer {
File myDir;
File[] contents;
Vector vectorList;
Iterator currentFileView;
File currentFile;
String path;
public FileViewer() {
path = new String("");
vectorList = new Vector();
}
public FileViewer(String path) {
this.path = path;
vectorList = new Vector();
}
/**
* ÉèÖÃä¯ÀÀµÄ·¾¶
*/
public void setPath(String path) {
this.path = path;
}
/***
* ·µ»Øµ±Ç°Ä¿Â¼Â·¾¶
*/
public String getDirectory() {
return myDir.getPath();
}
/**
* Ë¢ÐÂÁбí
*/
public void refreshList() {
if (this.path.equals("")) {
path = "c:\\";
}
myDir = new File(path);
vectorList.clear();
contents = myDir.listFiles();
//ÖØÐÂ×°Èë·¾¶ÏÂÎļþ
for (int i = 0; i < contents.length; i++) {
vectorList.add(contents[i]);
}
currentFileView = vectorList.iterator();
}
/**
* Òƶ¯µ±Ç°Îļþ¼¯ºÏµÄÖ¸ÕëÖ¸µ½ÏÂÒ»¸öÌõÄ¿
* @return ³É¹¦·µ»Øtrue,·ñÔòfalse
*/
public boolean nextFile() {
while (currentFileView.hasNext()) {
currentFile = (File) currentFileView.next();
return true;
}
return false;
}
/**
* ·µ»Øµ±Ç°Ö¸ÏòµÄÎļþ¶ÔÏóµÄÎļþÃû³Æ
*/
public String
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NumberFormat nf = NumberFormat.getIntegerInstance();
double v=12.6;
System.out.println(nf.format(v));
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class Tank{
int level;
}
public class Assignment {
public static void main(String[] args) {
Tank t1 = new Tank();
Tank t2 = new Tank();
t1.level= 9;
t2.level= 47;
System.out.println("1:t1.l ......
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