Nov
14
import java.io.*;
class FileTest{
public static void main(String ar[])throws IOException{
FileInputStream fis=new FileInputStream(“ab.txt”);
int i=fis.read();
while(i!=-1){
System.out.print((char)i);
i=fis.read();
}
}
}
//————————————————————–
import java.io.*;
class FileTest2{
public static void main(String ar[])throws IOException{
Console c=System.console();
String fname=c.readLine(“Enter File Name: “);
FileInputStream fis=new FileInputStream(fname);
int i=fis.read();
while(i!=-1){
System.out.print((char)i);
i=fis.read();
}
}
}
//—————————————————————-
import java.io.*;
class FileTest3{
public static void main(String ar[])throws IOException{
Console c=System.console();
String fname=c.readLine(“Enter File Name: “);
int j=fname.lastIndexOf(‘.’);
String s=fname.substring(j);
if(s.equalsIgnoreCase(“.c”)||s.equalsIgnoreCase(“.cpp”)||s.equalsIgnoreCase(“.java”)){
int o=0,k=0;
FileInputStream fis=new FileInputStream(fname);
int i=fis.read();
while(i!=-1){
if((char)i=='{‘)
o++;
if((char)i==’}’)
k++;
i=fis.read();
}
System.out.print(“{=”+o+” }=”+k);
}
else{
System.out.print(“Given File is not C/Cpp/java file”);
}
}
}
//——————————————————————
import java.io.*;
class FileTest3{
public static void main(String ar[])throws IOException{
Console c=System.console();
String fname=c.readLine(“Enter File Name: “);
int j=fname.lastIndexOf(‘.’);
String s=fname.substring(j);
if(s.equalsIgnoreCase(“.c”)||s.equalsIgnoreCase(“.cpp”)||s.equalsIgnoreCase(“.java”)){
int o=0,k=0;
FileInputStream fis=new FileInputStream(fname);
int i=fis.read();
while(i!=-1){
if((char)i=='{‘)
o++;
if((char)i==’}’)
k++;
i=fis.read();
}
System.out.print(“{=”+o+” }=”+k);
}
else{
System.out.print(“Given File is not C/Cpp/java file”);
}
}
}
//———————————————————————–
import java.io.*;
class FileTest5{
public static void main(String ar[])throws IOException{
Console c=System.console();
String fname=c.readLine(“Enter File Name: “);
FileInputStream fis=new FileInputStream(fname);
int i=fis.read();
while(i!=-1){
char ch=(char)i;
String st=ch+””;
st=st.toUpperCase();
System.out.print(st);
i=fis.read();
}
}
}
//—————————————————————–
import java.io.*;
class FileTest6{
public static void main(String ar[])throws IOException{
Console c=System.console();
String fname=c.readLine(“Enter From File Name: “);
String tname=c.readLine(“Enter To File Name: “);
FileInputStream fis=new FileInputStream(fname);
FileOutputStream fos=new FileOutputStream(tname);
int i=fis.read();
while(i!=-1){
fos.write(i);
i=fis.read();
}
}
}
//———————————————————————–