题目:
将d:java目录下的所有.java文件复制到d:jad目录下,并将原文件改成.jad格式的怎么写啊?
我只会把c盘的某个文件复制到d盘的、怎么写上面的?
例如下面的把c盘的下的t文件下的a.txt复制到d盘
public static void main(String []args){
FileReader fr=null;
FileWriter fw=null;
char[] ch=new char[1024];
int n=0;
try {
fr=new FileReader("c:\\t\\a.txt");
fw=new FileWriter("D:\\a.txt");
while((n=fr.read(ch))!=-1)
fw.write(ch,0,n);
fw.flush();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{ if(fw!=null){
try {
fw.close();
} catch (IOException e) {
e.printStackTrace();
} } if(fr!=null){
try {
fr.close();
} catch (IOException e) {
e.printStackTrace();
}
}
} }
}
将d:java目录下的所有.java文件复制到d:jad目录下,并将原文件改成.jad格式的怎么写啊?
我只会把c盘的某个文件复制到d盘的、怎么写上面的?
例如下面的把c盘的下的t文件下的a.txt复制到d盘
public static void main(String []args){
FileReader fr=null;
FileWriter fw=null;
char[] ch=new char[1024];
int n=0;
try {
fr=new FileReader("c:\\t\\a.txt");
fw=new FileWriter("D:\\a.txt");
while((n=fr.read(ch))!=-1)
fw.write(ch,0,n);
fw.flush();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{ if(fw!=null){
try {
fw.close();
} catch (IOException e) {
e.printStackTrace();
} } if(fr!=null){
try {
fr.close();
} catch (IOException e) {
e.printStackTrace();
}
}
} }
}
public static void main(String []args){
FileReader fr=null;
FileWriter fw=null;
char[] ch=new char[1024];
int n=0;
try {
fr=new FileReader("c:\\t\\a.txt");
fw=new FileWriter("D:\\a.txt");
while((n=fr.read(ch))!=-1)
fw.write(ch,0,n);
fw.flush();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
try {
if (fw!=null) fw.close();
if (fr!=null) fr.close();
} catch (Exception e) {
e.printStackTrace();
}
} //以上是LZ的复制文件代码
//文件改名
File f = new File("D:\\a.jad");
if (f.exsits()) f.delete();
new File("D:\\a.txt").renameTo(f);
}
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;public class Test { public static void main(String[] args) {
FileReader fr = null;
FileWriter fw = null;
char[] ch = new char[1024];
int n = 0;
List<File> files = getFiles("d:\\java");
for(File file : files){
try {
File f = new File("D:\\java1\\" + file.getName());
fr = new FileReader(file);
fw = new FileWriter(f);
while ((n = fr.read(ch)) != -1)
fw.write(ch, 0, n);
fw.flush();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (fw != null) {
try {
fw.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (fr != null) {
try {
fr.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
String fileName = file.getAbsolutePath();
File fl = new File(fileName.substring(0, fileName.indexOf(".")) + ".jad");
file.renameTo(fl);
}
}
private static List<File> getFiles(String path) {
List<File> files = new ArrayList<File>();
File file = new File(path);
getAllFiles(file, files);
return files;
} private static void getAllFiles(File file, List<File> files) {
if (file.isFile()) {
files.add(file);
} else {
File[] fs = file.listFiles();
for (File f : fs) {
getAllFiles(f, files);
}
}
}
}