第三z章 File I/O

package page3_79;


import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;


public class Work {
public static void main(String[] args) {
BR();
}


public static void BR() {
FileReader fr = null;
FileWriter fw = null;
BufferedReader br = null;
BufferedWriter bw = null;
try {
fr = new FileReader("C:\\新建文件夹\\source.txt");
br = new BufferedReader(fr);
fw = new FileWriter("C:\\新建文件夹\\target.txt");
bw = new BufferedWriter(fw);
String len = br.readLine();
while (len != null) {
bw.write(len);
bw.newLine();
len = br.readLine();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
bw.close();
br.close();
fw.close();
fr.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}

}

package page3_79;


import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;


public class WorkT {
public static void main(String[] args) {
RD();
}


public static void RD() {
FileReader fr = null;
BufferedReader br = null;
StringBuffer sbf = null;


sbf = new StringBuffer();
try {
fr = new FileReader("C:\\windows\\win.ini");
char[] ch = new char[1024];
br = new BufferedReader(fr);
int length = fr.read(ch);
while (length != -1) {
sbf.append(ch);
length = fr.read();
System.out.println(ch);


}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
try {
fr.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}


}