Java Boolean toString() Method

The toString() method of Java Boolean class returns a String illustration of this Boolean.

If the defined object is true, the result returned is "true", otherwise false is returned.

Syntax:

public String toString()
public static String toString(boolean b)  

Parameters:

b - This is the Boolean argument to be converted.

Return Value:

The toString() method returns:

A string illustrating the value of this Boolean.
The string illustration of the defined Boolean.

Example 1

public class BooleanToStringExample1 {
    public static void main(String[] args) {
        Boolean b1 = true;
        System.out.println("Boolean value = "+b1);
        System.out.println("Hash Code for boolean value = "+b1.hashCode());
        //converting boolean value tp String
        String str = b1.toString();
        System.out.println("String value = "+str);
        System.out.println("Hash Code for String Value = "+str.hashCode());

    }
}

Test it Now

Output:

Boolean value = true
Hash Code for boolean value = 1231
String value = true
Hash Code for String Value = 3569038

Example 2

import java.util.Scanner;

  public class BooleanToStringExample2 {
        public static void main(String[] args) {
            Scanner scanner = new Scanner(System.in);
            System.out.println("Enter your percentage.");
            Double d1 = scanner.nextDouble();
            Boolean b1 = false;
            if (d1 > 64) {
                b1 =true;}
                String str = b1.toString();
                if((str=="true")) {
                    System.out.println("Congratulation! You have passed.");
                }
                else {//if(str=="false')
                double d2=64.0-d1;
                System.out.println("Sorry! You have failed. You needed "+d2+" more marks to pass .\nTry again next year.");
            }
        }
    }

Output:

Enter your percentage.
89
Congratulation! You have passed.

Example 3

public class BooleanToStringExample3 {
   static Boolean b1 = true;
    int age;
  static void getAge(int age){
     // calling static toString Method()
       while (Boolean.toString(b1)=="true"){
           System.out.println("Your age is "+age +" years.");
           b1 = true;
           String str = Boolean.toString(b1);
           if(age>17){
               System.out.println("You eligible to enter the club.");
           }
           else{
               int val = 18-age;
               System.out.println("Sorry! You are not an adult.\nYou will be eligible after"+val+"year.");
           }
          b1 =false;
       }
   }
    public static void main(String[] args) {
        getAge(9);

    }
}

Test it Now

Output:

Your age is 9 years.
Sorry! You are not an adult.
You will be eligible after9year.

Example 4

import java.util.Scanner;

public class BooleanToStringExample4 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        try {
            System.out.println("True/False:-\n5 months have 30 days. ");
            System.out.print("Ans: ");
            Boolean b1 = scanner.nextBoolean();
            //calling static tpString() method
            if (Boolean.toString(b1) == "false") {
                System.out.println("Answer is right.\nBecause all 11 months(except feb) have 30 days. ");
            } else {
                System.out.println("Answer is wrong.\nBecause all 11 months (except Feb) have 30 days.");
            }
        }catch (Exception e){
            System.out.println("Plz enter a valid answer. Either true or False.");

        }
    }
}

Output:

True/False:-
5 months have 30 days. 
Ans: true
Answer is wrong.
Because all 11 months (except Feb) have 30 days.

Example 5

public class BooleanToStringMethodExample5 {
    public static void main(String[] args) {
        boolean b1 = true;
        System.out.println("boolean value = "+b1);
        String str =b1.toString();
        System.out.println("String value = "+str);
    }
}

Test it Now

Output:

Error:(7, 23) java: boolean cannot be dereferenced

Boolean is a primitive data type, its object can't be used to call Boolean class objects.

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Java Boolean toString() Method

Syntax:

Parameters:

Return Value:

Example 1

Example 2

Example 3

Example 4

Example 5