Question

java输入输出流的使用

用FileInputStream读入一个文件（自定义一文本文件，输入若干单词）的内容并将其中的所有小写a都改为大写A，然后再将替换过后内容写到新文件中（用FileOutputStream）

Answer 1

import java.io.*;
public class pipel{
char c[]=new char[100];
public void change(){
for(int i=0;i<6;i++){
if(c[i]=='a'){
c[i]='A';
}
}
}
public pipel(){}
public void connection(){
try{
File f=new File("text1.txt");File fc=new File("text2.txt");
FileInputStream in=new FileInputStream(f);
InputStreamReader ir=new InputStreamReader(in);
ir.read(c);
}catch(Exception e){e.printStackTrace();}
}
public void push(){
try{
File fc=new File("text2.txt");
FileOutputStream out=new FileOutputStream(fc);
OutputStreamWriter ow=new OutputStreamWriter(out);
ow.write(c);
ow.close();
}catch(Exception e){e.printStackTrace();}
}
public static void main(String[] args){
pipel k=new pipel();
k.connection();
k.change();
k.push();
}
}

Answer 2

import
java.io.*;
public
class
pipel{
char
c[]=new
char[100];
public
void
change(){
for(int
i=0;i<6;i++){
if(c[i]=='a'){
c[i]='A';
}
}
}
public
pipel(){}
public
void
connection(){
try{
File
f=new
File("text1.txt");File
fc=new
File("text2.txt");
FileInputStream
in=new
FileInputStream(f);
InputStreamReader
ir=new
InputStreamReader(in);
ir.read(c);
}catch(Exception
e){e.printStackTrace();}
}
public
void
push(){
try{
File
fc=new
File("text2.txt");
FileOutputStream
out=new
FileOutputStream(fc);
OutputStreamWriter
ow=new
OutputStreamWriter(out);
ow.write(c);
ow.close();
}catch(Exception
e){e.printStackTrace();}
}
public
static
void
main(String[]
args){
pipel
k=new
pipel();
k.connection();
k.change();
k.push();
}
}