I have the following text:
My name is Omer
//new line
I want to start my own personal project and achieve a lot with it
//new line
//new line
I also have problems that I encounter along the way but I know I will overcome them
//new line
Good
Bye
//new line
Bye
So that was the example above, I also want to use a BufferedReader. Let's say my BufferedReader is called br. Using br.readLine(), I can read lines from the console(I will input every single letter, I also use an InputStreamerReader)
If I do for example:
String line;
do {
line = br.readLine();
} while(line.lenght != 0)
It will stop after I enter a new line.
How can I read that text correctly? (I think that this is the first question that I ask here, sorry for any mistakes that I have maybe made)
You can use:
String line;
while((line=br.readLine())!=null) {
// your code here..
}
Note: don't do do-while
, use while
. Your input may be empty from the beginning, and you don't want to have a Null Pointer Exception .
just use readlines as readline just reads one line and return
String line;
do {
line = br.readLines();
} while(line.lenght != 0)
BufferedReader#readLine
returns null
when there is nothing left to read, so the following will work:
while((line=br.readLine())!=null){
//do something with line
}
Files.lines
or Files.readAllLines
can be used to simplify this.
If you are reading input from the console, you can enter a string like "exit" to indicate that the program should stop reading.
while(!(line=br.readLine()).equalsIgnoreCase("exit")){
//do something with line
}
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