How to return a boolean in java

How do you return a Boolean value in Java?

Example 1

  1. public class BooleanEqualsExample1 {
  2. public static void main(String[] args) {
  3. Boolean b1 = new Boolean(true);
  4. Boolean b2 = new Boolean(false);
  5. // method will give the result of equals method on b1,b2 to b3.
  6. if(b1.equals(b2)){
  7. System.out.println(“equals() method returns true”);
  8. }

What does a Boolean method return?

Writing a Boolean Method

Writing a method that returns a boolean is just like writing any method with a return value, but ultimately we are just returning either true or false. For example, suppose we are writing code for a hybrid-electric car.

How do you return a Boolean and a string in Java?

toString(boolean b) returns a String object representing the specified boolean. If the specified boolean is true, then the string “true” will be returned, otherwise the string “false” will be returned.

Is Boolean a return type in Java?

The boolean returned represents the value true if the string argument is not null and is equal, ignoring case, to the string “true”, otherwise return false. … If the specified boolean value is true, it returns Boolean. TRUE or if it is false, then this method returns Boolean. FALSE.

What is Boolean example?

A Boolean variable has only two possible values: true or false. … In this example, when the boolean value “x” is true, vertical black lines are drawn and when the boolean value “x” is false, horizontal gray lines are drawn.

Can Boolean be null in Java?

A boolean cannot be null in java. A Boolean , however, can be null . If a boolean is not assigned a value (say a member of a class) then it will be false by default. The only thing that can be a null is a non-primivite.

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Is if a Boolean operator?

AND processing returns a TRUE result for the IF statement only if all the conditional expressions evaluate as TRUE. … | or OR (OR Boolean operator) OR processing returns a TRUE result for the IF statement if any of the conditional expressions evaluate as TRUE.

How do you make a Boolean true?

boolean user = true;

So instead of typing int or double or string, you just type boolean (with a lower case “b”). After the name of you variable, you can assign a value of either true or false.

What is the Boolean method?

Boolean, or boolean logic, is a subset of algebra used for creating true/false statements. Boolean expressions use the operators AND, OR, XOR, and NOT to compare values and return a true or false result. … x AND y – returns True if both x and y are true; returns False if either x or y are false.

Can we convert boolean to string in Java?

We can convert boolean to String in java using String. valueOf(boolean) method. Alternatively, we can use Boolean. toString(boolean) method which also converts boolean into String.

How do you convert to Boolean?

To convert String to Boolean, use the parseBoolean() method in Java. The parseBoolean() parses the string argument as a boolean. The boolean returned represents the value true if the string argument is not null and is equal, ignoring case, to the string “true”.

Can a method return a string in Java?

There’s no problem with returning Strings in this manner. In Java, a String is a reference to an immutable object.

Is void a return type in Java?

The void Keyword

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This method is a void method, which does not return any value. Call to a void method must be a statement i.e. methodRankPoints(255.7);. It is a Java statement which ends with a semicolon as shown in the following example.

Why return is used in Java?

return is a reserved keyword in Java i.e, we can’t use it as an identifier. It is used to exit from a method, with or without a value. Methods returning a value : For methods that define a return type, return statement must be immediately followed by return value. …

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