CODEWITHSUNDEEP
javafunctionmethodsboolean
Jay Marz
Jay Marz

Reputation: 1912

How to return a boolean method in java?

I need help on how to return a boolean method in java. This is the sample code:

public boolean verifyPwd(){
        if (!(pword.equals(pwdRetypePwd.getText()))){
                  txtaError.setEditable(true);
                  txtaError.setText("*Password didn't match!");
                  txtaError.setForeground(Color.red);
                  txtaError.setEditable(false);
           }
        else {
            addNewUser();
        }
        return //what?
}

I want the verifyPwd() to return a value on either true or false whenever I want to call that method. I want to call that method like this:

if (verifyPwd()==true){
    //do task
}
else {
    //do task
}

How to set the value for that method?

Upvotes: 26

Views: 440895

Answers (5)

PC.
PC.

Reputation: 7024

try this:

public boolean verifyPwd(){
        if (!(pword.equals(pwdRetypePwd.getText()))){
                  txtaError.setEditable(true);
                  txtaError.setText("*Password didn't match!");
                  txtaError.setForeground(Color.red);
                  txtaError.setEditable(false);
                  return false;
           }
        else {
            return true;
        }
        
}

if (verifyPwd()==true){
    addNewUser();
}
else {
    // passwords do not match

System.out.println("password do not match"); }

Upvotes: 7

SSS
SSS

Reputation: 300

Best way would be to declare Boolean variable within the code block and return it at end of code, like this:

public boolean Test(){
    boolean booleanFlag= true; 
    if (A>B)
    {booleanFlag= true;}
    else 
    {booleanFlag = false;}
    return booleanFlag;

}

I find this the best way.

Upvotes: 1

Adam Liss
Adam Liss

Reputation: 48310

You're allowed to have more than one return statement, so it's legal to write

if (some_condition) {
  return true;
}
return false;

It's also unnecessary to compare boolean values to true or false, so you can write

if (verifyPwd())  {
  // do_task
}

Edit: Sometimes you can't return early because there's more work to be done. In that case you can declare a boolean variable and set it appropriately inside the conditional blocks.

boolean success = true;

if (some_condition) {
  // Handle the condition.
  success = false;
} else if (some_other_condition) {
  // Handle the other condition.
  success = false;
}
if (another_condition) {
  // Handle the third condition.
}

// Do some more critical things.

return success;

Upvotes: 26

Karthik T
Karthik T

Reputation: 31952

You can also do this, for readability's sake

boolean passwordVerified=(pword.equals(pwdRetypePwd.getText());

if(!passwordVerified ){
    txtaError.setEditable(true);
    txtaError.setText("*Password didn't match!");
    txtaError.setForeground(Color.red);
    txtaError.setEditable(false);
}else{
    addNewUser();
}
return passwordVerified;

Upvotes: 3

Mihai Danila
Mihai Danila

Reputation: 2348

public boolean verifyPwd(){
        if (!(pword.equals(pwdRetypePwd.getText()))){
                  txtaError.setEditable(true);
                  txtaError.setText("*Password didn't match!");
                  txtaError.setForeground(Color.red);
                  txtaError.setEditable(false);
                  return false;
           }
        else {
            addNewUser();
            return true;
        }
}

Upvotes: 3

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