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Text lesson

isEmpty()

Example

Determine whether a string is empty or not.

String myStr1 = "Hello";
String myStr2 = "";
System.out.println(myStr1.isEmpty());
System.out.println(myStr2.isEmpty());

Definition and Usage

The isEmpty() method determines if a string is empty or not.

It returns true if the string’s length is 0, and false otherwise.

Syntax

public boolean isEmpty()

Parameters

None.

Technical Details

Return

A boolean value is returned:

true indicates that the string is empty (length() is 0).

false indicates that the string is not empty.