I have been using this idiom for some time now. And it seems to be the most wide-spread, at least in the sites I've visited.
Does anyone have a better/different way to Read a Java String from the contents of a file?
private String readFile( String file ) throws IOException {
BufferedReader reader = new BufferedReader( new FileReader (file));
String line = null;
StringBuilder stringBuilder = new StringBuilder();
String ls = System.getProperty("line.separator");
while( ( line = reader.readLine() ) != null ) {
stringBuilder.append( line );
stringBuilder.append( ls );
}
return stringBuilder.toString();
}
Read String from a File Example:-
import java.io.*;
public class ReadFile{
public static void main(String[]args){
File file = new File(”/home/Parvez/MyJavaBook”, ”MyText.txt”);
try{
BufferedReader in = new BufferedReader(new FileReader(file));
String str = in.readLine();
while(str != null){
System.out.println(”Read: ” +str);
str = in.readLine();
}
in.close();
}catch(FileNotFoundException e1){
System.out.println(”File not found”);
}catch(IOException e2){
System.out.println(”Input/output problem”);
}
}
}
Generation of Source Code:--
/*
Read File in String Using Java Buffered Input Stream Example. This example shows how to read a file content into a Sting object using available and read methods of Java Buffered Input Stream.
*/
import java.io.*;
public class ReadFileInToString {
public static void main(String[] args) {
//create file object
File file = new File("C://FileIO//ReadFile.txt");
BufferedInputStream bin = null;
try
{
//create FileInputStream object
FileInputStream fin = new FileInputStream(file);
//create object of BufferedInputStream
bin = new BufferedInputStream(fin);
//create a byte array
byte[] contents = new byte[1024];
int bytesRead=0;
String strFileContents;
while( (bytesRead = bin.read(contents)) != -1){
strFileContents = new String(contents, 0, bytesRead);
System.out.print(strFileContents);
}
}
catch(FileNotFoundException e)
{
System.out.println("File not found" + e);
}
catch(IOException ioe)
{
System.out.println("Exception while reading the file " + ioe);
}
finally
{
//close the BufferedInputStream using close method
try{
if(bin != null)
bin.close();
}catch(IOException ioe)
{
System.out.println("Error while closing the stream :"
+ ioe);
}
}
}
}
/*
Output would be This file is for demonstration of how to read a file into String using Java Buffered Input Stream.
*/
Does anyone have a better/different way to Read a Java String from the contents of a file?
private String readFile( String file ) throws IOException {
BufferedReader reader = new BufferedReader( new FileReader (file));
String line = null;
StringBuilder stringBuilder = new StringBuilder();
String ls = System.getProperty("line.separator");
while( ( line = reader.readLine() ) != null ) {
stringBuilder.append( line );
stringBuilder.append( ls );
}
return stringBuilder.toString();
}
Read String from a File Example:-
import java.io.*;
public class ReadFile{
public static void main(String[]args){
File file = new File(”/home/Parvez/MyJavaBook”, ”MyText.txt”);
try{
BufferedReader in = new BufferedReader(new FileReader(file));
String str = in.readLine();
while(str != null){
System.out.println(”Read: ” +str);
str = in.readLine();
}
in.close();
}catch(FileNotFoundException e1){
System.out.println(”File not found”);
}catch(IOException e2){
System.out.println(”Input/output problem”);
}
}
}
Generation of Source Code:--
/*
Read File in String Using Java Buffered Input Stream Example. This example shows how to read a file content into a Sting object using available and read methods of Java Buffered Input Stream.
*/
import java.io.*;
public class ReadFileInToString {
public static void main(String[] args) {
//create file object
File file = new File("C://FileIO//ReadFile.txt");
BufferedInputStream bin = null;
try
{
//create FileInputStream object
FileInputStream fin = new FileInputStream(file);
//create object of BufferedInputStream
bin = new BufferedInputStream(fin);
//create a byte array
byte[] contents = new byte[1024];
int bytesRead=0;
String strFileContents;
while( (bytesRead = bin.read(contents)) != -1){
strFileContents = new String(contents, 0, bytesRead);
System.out.print(strFileContents);
}
}
catch(FileNotFoundException e)
{
System.out.println("File not found" + e);
}
catch(IOException ioe)
{
System.out.println("Exception while reading the file " + ioe);
}
finally
{
//close the BufferedInputStream using close method
try{
if(bin != null)
bin.close();
}catch(IOException ioe)
{
System.out.println("Error while closing the stream :"
+ ioe);
}
}
}
}
/*
Output would be This file is for demonstration of how to read a file into String using Java Buffered Input Stream.
*/
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