Q:

Java Convert String to boolean

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robaa
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2022-11-12
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We can convert String to boolean in java using Boolean.parseBoolean(string) method.

To convert String into Boolean object, we can use Boolean.valueOf(string) method which returns instance of Boolean class.

To get boolean true, string must contain "true". Here, case is ignored. So, "true" or "TRUE" will return boolean true. Any other string value except "true" returns boolean false.

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robaa
2022-11-12
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Java String to boolean Example: Boolean.parseBoolean()

The parseBoolean() method converts string into boolean primitive.

The parseBoolean() is the static method of Boolean class. The signature of parseBoolean() method is given below:

 

public static int parseBoolean(String s)  

Let's see the simple example of converting String to boolean in java.

public class StringToBooleanExample{  
public static void main(String args[]){  
String s1="true";  
String s2="TRue";  
String s3="ok";  
boolean b1=Boolean.parseBoolean(s1);  
boolean b2=Boolean.parseBoolean(s2);  
boolean b3=Boolean.parseBoolean(s3);  
System.out.println(b1);  
System.out.println(b2);  
System.out.println(b3);  
}}

 

Output:

true
true
false

 

Java String to Boolean Example: Boolean.valueOf()

The Boolean.valueOf() method converts string into Boolean object. Let's see the simple code to convert String to Boolean in java.

public class StringToBooleanExample2{  
public static void main(String args[]){  
String s1="true";    
String s2="TRue";    
String s3="ok";    
Boolean b1=Boolean.valueOf(s1);    
Boolean b2=Boolean.valueOf(s2);    
Boolean b3=Boolean.valueOf(s3);    
System.out.println(b1);    
System.out.println(b2);    
System.out.println(b3);  
}}

 

Output:

true
true
false

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