When i tried to convert a String Object to boolean, the result is different.
String strFlag="true";
boolean boolFlag = Boolean.getBoolean(strFlag);
boolFlag
ends up having a false
value.
To convert String to boolean in Java, you can use Boolean. parseBoolean(string). But if you want to convert String to Boolean object then use the method Boolean. valueOf(string) method.
The simplest way to do so is to use the strict equality operator to compare our string value to the "true" - if the string is (strictly) equal to "true" , the output will be boolean true . Alternatively, you can use the ternary operator alongside the loose equality operator to achieve the same.
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 convert a string to a boolean in TypeScript, use the strict equality operator to compare the string to the string "true" , e.g. const bool = str === 'true' . If the condition is met, the strict equality operator will return the boolean value true , otherwise false is returned.
Use Boolean.valueOf
boolean boolFlag = Boolean.valueOf(strFlag);
This method returns a Boolean with a value represented by the specified String. The Boolean returned represents the value true if the string argument is not null and is equal, ignoring case, to the string "true".
Use Boolean.valueOf(String string) to archieve your goal.
boolean boolFlag = Boolean.valueOf(strFlag);
Returns a Boolean with a value represented by the specified String. The Boolean returned represents the value true if the string argument is not null and is equal, ignoring case, to the string "true".
Example: Boolean.valueOf("True")
returns true.
Example: Boolean.valueOf("yes")
returns false.
As of java 1.5 there's also Boolean.parseBoolean(String s)
which returns the primitive type boolean
instead of the boxed type Boolean
to spare some CPU cycles in most cases.
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