Web Reference: Jul 11, 2025 · Syntax: public void setLength(int newLength) Parameters: This method accepts one parameter newLength which is Integer type value refers to the new length of sequence you want to set. Returns: This method returns nothing. Exception: If the newLength is negative then IndexOutOfBoundsException. The Java StringBuilder setLength () method is used to set/change the length of a StringBuilder object. On invoking this method by passing an integer value representing the new length, the current object is changed to a new object (StringBuilder) whose length is same as the given argument. Oct 4, 2022 · Java StringBuilder setLength () method is used to set a new length to the existing StringBuilder sequence. If the new length is greater than the current length then null characters are appended at the end of the sequence.
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