How to use the valueOf method in Java?

1 year ago
Ava Mitchell
1 minute

In Java, the valueOf() method is typically used to convert other data types into their corresponding wrapper class objects. For example, you can use Integer.valueOf() to convert int type to an Integer object, and Double.valueOf() to convert double type to a Double object, and so on.

The code sample is as follows:

int intValue = 10;
Integer integerValue = Integer.valueOf(intValue);

double doubleValue = 3.14;
Double doubleObject = Double.valueOf(doubleValue);

The valueOf() method can also be used to convert a string into its corresponding wrapper class object. For example, you can use Integer.valueOf() to convert the string “10” into an Integer object, and Double.valueOf() to convert the string “3.14” into a Double object, and so on.

The sample code is as follows:

String strValue = "10";
Integer integerValue = Integer.valueOf(strValue);

String strDoubleValue = "3.14";
Double doubleObject = Double.valueOf(strDoubleValue);

It is important to note that the valueOf() method returns a new wrapper object, not the original value or string itself.

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