public static int test() { Scanner s = null; try { s = new Scanner(new File("d:\\ApplicationResources_zh_CN.txt")); List<String> list = new ArrayList<String>(); FileWriter fw = new FileWriter(new File("d:\\test.txt"),true); while(s.hasNext()) { String copy = s.nextLine(); System.out.println(copy); list.add(copy); } System.out.println("-----------------------------"); for(int i=list.size()-1;i>0;i--) { fw.write(list.get(i)+"\n"); } fw.close(); System.out.println("over"); return 0; }catch(Exception e) { e.printStackTrace(); return 1; }finally{ s.close(); }
}
import java.io.*; import java.util.*; class zhenfan { static private final String newline = "\n"; public static void main(String[] args) { BufferedReader br =null; PrintWriter pw=null;
String path1="d:\\test\\aaa.txt"; String path2="d:\\test\\bbb.txt"; int num=1; Map<Integer,String> result= new HashMap<Integer,String>(); //List<String> result = new ArrayList<String>(); try{ br = new BufferedReader(new FileReader(path1)); pw=new PrintWriter(new BufferedWriter(new FileWriter(path2,true)));
Scanner s = null;
try {
s = new Scanner(new File("d:\\ApplicationResources_zh_CN.txt"));
List<String> list = new ArrayList<String>();
FileWriter fw = new FileWriter(new File("d:\\test.txt"),true);
while(s.hasNext()) {
String copy = s.nextLine();
System.out.println(copy);
list.add(copy);
}
System.out.println("-----------------------------");
for(int i=list.size()-1;i>0;i--)
{
fw.write(list.get(i)+"\n");
}
fw.close();
System.out.println("over");
return 0;
}catch(Exception e) {
e.printStackTrace();
return 1;
}finally{
s.close();
}
}
import java.io.*;
import java.util.*;
class zhenfan
{
static private final String newline = "\n";
public static void main(String[] args)
{
BufferedReader br =null;
PrintWriter pw=null;
String path1="d:\\test\\aaa.txt";
String path2="d:\\test\\bbb.txt";
int num=1;
Map<Integer,String> result= new HashMap<Integer,String>();
//List<String> result = new ArrayList<String>();
try{
br = new BufferedReader(new FileReader(path1));
pw=new PrintWriter(new BufferedWriter(new FileWriter(path2,true)));
String str = br.readLine();
while(str!=null){
result.put(num,str);
num++;
str = br.readLine();
}
num--;
//System.out.println(result.get(num));
for(int i=num;i>=1;i--){
pw.println(result.get(i));
}
}catch(Exception e){
e.printStackTrace();
}finally{
try{
br.close();
pw.close();
}catch(Exception e2){
e2.printStackTrace();
}
}
}
}
d:\test下创建测试文件就可以了
想改随便你
import java.util.*;
class zhenfan
{
static private final String newline = "\n";
public static void main(String[] args)
{
BufferedReader br =null;
PrintWriter pw=null;
String path1="d:\\aaa.txt";
String path2="d:\\bbb.txt";
int num=1;
//自己定义字符串数字的大小
String[] result= new String[10];
//List<String> result = new ArrayList<String>();
try{
br = new BufferedReader(new FileReader(path1));
pw=new PrintWriter(new BufferedWriter(new FileWriter(path2,true)));
String str = br.readLine();
while(str!=null){
// System.out.println(str);
result[num]=str;
// System.out.println(result[num]);
num++;
str = br.readLine(); }
num--;
//System.out.println(result.get(num));
//或者(j = num;j>=1;j--)
for(int j = 1;j<=num;j++){
for(int i=result[j].length()-1;i>=0;i--){
pw.print(result[j].charAt(i));
}
pw.println();
}
}catch(Exception e){
e.printStackTrace();
}finally{
try{
br.close();
pw.close();
System.out.print("OK");
}catch(Exception e2){
e2.printStackTrace();
}
}
}
}由于我用的是JDK 1.4,好多不支持,所以这个样子修改了下。验证过了,可以的。
import java.io.BufferedWriter;
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 GetText {
public static void main(String[] args) { new GetText().getText();
}
public void getText(){
try {
List<String> al = new ArrayList<String>();
BufferedReader in = new BufferedReader(new FileReader("d:\\server.txt"));
BufferedWriter out = new BufferedWriter(new FileWriter("d:\\test.txt"));
String readline = "";
while((readline = in.readLine())!=null){
al.add(readline);
}
in.close();
for(int i=al.size()-1;i>=0;i--){
out.write(al.get(i));
out.newLine();
}
out.flush();
out.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}