How do you get rid of extra lines in Java?

How do you remove an extra line from a string in Java?

Try this: String text = “line 1nnline 3nnnline 5”; String adjusted = text. replaceAll(“(? m)^[ t]*r?

How do you remove the next line space in Java?

String text = readFileAsString(“textfile. txt”); text. replace(“n”, “”);

  1. Do you want to eliminate all line breaks? …
  2. Oh, if you want to delete all linefeeds, remove all n AND all r (because Windows linebreak is rn).

How do you delete a line in Java?

You want to do something like the following:

  1. Open the old file for reading.
  2. Open a new (temporary) file for writing.
  3. Iterate over the lines in the old file (probably using a BufferedReader) …
  4. When done, close both files.
  5. Delete the old file.
  6. Rename the temporary file to the name of the original file.

How do I remove the tab space from a string in Java?

1 Answer. You can remove any character/string from a string by using the Replace function. This allows you to specify the string you want to replace, and the value you want to replace it with. When you want to “remove” you simple use an empty string as the replace value.

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How do you replace a line break in Java?

Line break (“n”) is a single character, to replace all line breaks from strings replace() function can be used. String replace(): returns a new String object that contains the same sequence of characters as the original string, but with a given character replaced by another given character.

Does trim remove tabs Java?

With trim, we remove them. Trim in Java removes whitespace (including newlines, tabs and spaces) from both the left and right. Custom methods may be used for more specific purposes.

What is the difference between N and r in Java?

They’re different characters. r is carriage return, and n is line feed. On “old” printers, r sent the print head back to the start of the line, and n advanced the paper by one line. … In C# and Java, for example, n always means Unicode U+000A, which is defined as line feed.

Does Strip remove newline Java?

The strip() method uses Character and Unicode API to check for white space characters. … You can use trim() method if the string contains usual white space characters – space, tabs, newline, a carriage return. The recommended method is strip() to remove all the leading and trailing white space characters from the string.

What is Slash r in Java?

+1. This is not only in java. ‘ r’ is the representation of the special character CR (carriage return), it moves the cursor to the beginning of the line. ‘ n'(line feed) moves the cursor to the next line .

What is the difference between flush and close in Java?

flush() writes the content of the buffer to the destination and makes the buffer empty for further data to store but it does not closes the stream permanently. That means you can still write some more data to the stream. But close() closes the stream permanently.

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What does flush do in Java?

The flush() method of PrintWriter Class in Java is used to flush the stream. By flushing the stream, it means to clear the stream of any element that may be or maybe not inside the stream. It neither accepts any parameter nor returns any value.

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