stringbuilder java setlength

To set the length of a StringBuilder object in Java, you can use the setLength method. This method takes an int value as an argument and sets the length of the StringBuilder object to the specified value.

If the specified length is greater than the current length of the StringBuilder, the setLength method will pad the string with spaces until it reaches the specified length. If the specified length is less than the current length of the StringBuilder, the setLength method will truncate the string to the specified length.

Here's an example of how to use the setLength method:

StringBuilder sb = new StringBuilder("Hello, world!");
sb.setLength(5);  // sb is "Hello"

In this example, we're setting the length of the StringBuilder to 5, so the string is truncated to "Hello".

You can find more information about the setLength method and examples of how to use it in the Java documentation.