How can I clear or empty a StringBuilder

You can use Java’s StringBuilder to create and manipulate Strings as follows:

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StringBuilder sb = new StringBuilder();
sb.append("Some").append(" ").append("String");
System.out.println(sb.toString());

// "Some String"

The following three (3) options allow you to clear or empty a StringBuilder.

Option 1 – using setLength

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sb.setLength(0);

Option 2 – reinstantiating

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sb = new StringBuilder();

Option 3 – using delete

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sb.delete(0, sb.length());