/*
第一种复制每次复制一个字符
*/
package test;
import java.io.FileReader;
import java.io.FileWriter;
import java.math.BigDecimal;
import java.nio.channels.NonReadableChannelException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;
public class Main {
private static final String space_operator = " ";
private static final double pi = Math.PI;
private static final String LINE_SEPARATOR = System.getProperty("line.separator");
public static void main(String[] args) throws Exception {
FileReader fReader = new FileReader("e:\\开开.txt");
FileWriter fWriter = new FileWriter("copy_2.txt");
int ch = 0;
while((ch = fReader.read()) != -1)
{
fWriter.write(ch);
}
fReader.close();
fWriter.close();
}
}
/*
第二种方法用数组复制
*/
package test;
import java.io.FileReader;
import java.io.FileWriter;
import java.math.BigDecimal;
import java.nio.channels.NonReadableChannelException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;
public class Main {
private static final String space_operator = " ";
private static final double pi = Math.PI;
private static final String LINE_SEPARATOR = System.getProperty("line.separator");
public static void main(String[] args) throws Exception {
FileReader fReader = new FileReader("e:\\开开.txt");
FileWriter fWriter = new FileWriter("copy_3.txt");
char []buf = new char[1024];
int len = 0;
while((len = fReader.read(buf)) != -1)
{
fWriter.write(new String(buf,0,len));
}
fReader.close();
fWriter.close();
}
}
