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0How to Convert String Type Variables into Boolean In Java Program
Java Strings
- In Java, a string is a sequence of characters. It is an object of the class java.lang.String, which is defined in the Java standard library.
- Text is represented by strings, which are also frequently used to represent messages, names, and other types of human-readable data.
- Strings in Java are immutable, which means that once you create a string object, its value cannot be changed.
- You must be familiar with following topics to understand the correspond example Such as: Java Strings, Java Data Types.
Steps to Convert String Type Variable into Boolean
- Here are the steps to Convert String Type Variable into Boolean in Java:, You can follow these steps:
Declare a string variable: To start with, you need to declare a string type variable to store the string value that you want to convert.
Call the Boolean.valueOf() method: The Boolean.valueOf() method takes a string as an argument and returns its boolean equivalent.
Store the result in a boolean variable: The boolean value returned by the Boolean.valueOf() method can be stored in a boolean variable for further use.
Use the boolean variable: Finally, you can use the boolean variable to perform various operations or as an argument in method calls.
There are three ways to convert a string type variable into a boolean in Java:
Use the parseBoolean() method of the Boolean class: :
The parseBoolean() method is a static method of the Boolean class that converts a string representation of a boolean value into a boolean value.
Use the valueOf() method of the Boolean class:
The valueOf() method is a static method of the Boolean class that returns a Boolean object that represents the specified string.
Use an if-else statement:
You can use an if-else statement to compare the string to the string representation of the boolean values "true" and "false".
Let’s look at a Java Program to Convert String Type Variable into Boolean in Java to perform certain operations.
Example 1: Java Program to Convert String Type Variable into Boolean.
public class Main {
public static void main(String[] args) {
//String
String str = "true";
//String to boolean
boolean result = Boolean.parseBoolean(str);
//Return boolean value
System.out.println(result);
}
}Output
true
Explanation:
The output of this program will be true.
The Boolean.parseBoolean(str) method returns a boolean primitive equivalent to the string argument.
If the string argument is "true", the boolean value true is returned.
If the string argument is anything else, the boolean value false is returned.
Example 2 : Java Program to Convert string to boolean using valueOf()
public class Main {
public static void main(String[] args) {
//String
String str1 = "yes";
String str2 = "false";
//String to boolean
boolean bool1 = Boolean.valueOf(str1);
boolean bool2 = Boolean.valueOf(str2);
//Return boolean value
System.out.println("String 'yes' converted to boolean: " + bool1);
System.out.println("String 'false' converted to boolean: " + bool2);
}
}
Output
String 'yes' converted to boolean: false String 'false' converted to boolean: false
Explanation:
In this example,
we use the Boolean.valueOf() function to translate the strings "yes" and "false" into their corresponding boolean values.
Given that it is not equivalent to "true" (ignoring case), the string "yes" will be converted to false, and the string "false" will be changed to false.
The console is then printed with the results.
Example 3: Java Program to Convert string to boolean using valueOf()
Run
public class Main {
public static void main(String[] args) {
String str = "false";
boolean bool = Boolean.valueOf(str);
System.out.println("String 'false' converted to boolean: " + bool);
}
}
Output
String 'false' converted to boolean: false
Explanation:
we convert the string "false" to its boolean equivalent using the Boolean.valueOf() method.The result is then printed to the console.
As you can see, the Boolean.valueOf() method is a simple and straightforward way to convert a string to a boolean value in Java.
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