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:

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.

Next TopicJava Boolean

boolean booleanValue()compare compareTo()equals()getboolean()hashcode()java logicalAnd()logicalOr()parseBoolean()toString()valueOf()

Java Boolean toString() Method with Examples

Java Boolean toString() Method

Syntax:

Parameters:

Return Value:

Example 1

Example 2

Example 3

Example 4

Example 5

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