Java - parse String and add Line break every 100 characters [duplicate]

Answer 1

As you cannot just add more charachters to a regular String in Java. You should use the StringBuffer to do this.

You can loop through the String with a for loop and then so something after every 100th character:

String string = "Some long string ...";
StringBuffer buffer = new StringBuffer();

for(int i = 0; i < string.length(); i++) {
    // Append a \n after every 100th character.
    if((i > 0) && (i % 100) == 0) {
        buffer.append("\n");
    }
    // Just adds the next character to the StringBuffer.
    buffer.append(string.charAt(i));
}

String parsedString = buffer.toString();