Is there a method similar to equals() that expresses "not equal to"?
An example of what I am trying to accomplish is below:
if (secondaryPassword.equals(initialPassword))
{
JOptionPane.showMessageDialog(null, "You've successfully completed the program.");
} else {
secondaryPassword = JOptionPane.showInputDialog(null, "Your passwords do not match. Please enter you password again.");
}
I am trying to find something that will not require me to use if ( a != c).
This question is related to
java
if-statement
equals
boolean-expression
Just put a '!' in front of the boolean expression
If the class implements comparable, you could also do
int compRes = a.compareTo(b);
if(compRes < 0 || compRes > 0)
System.out.println("not equal");
else
System.out.println("equal);
doesn't use a !, though not particularly useful, or readable....
if (!secondaryPassword.equals(initialPassword))
"Not equals" can be expressed with the "not" operator ! and the standard .equals.
if (a.equals(b)) // a equals b
if (!a.equals(b)) // a not equal to b
Source: Stackoverflow.com