how to add parentheses for number in java

To add parentheses around a number in Java, you can use the "(" and ")" characters to enclose the number.

Here's an example of how you could add parentheses around a number in Java:

int number = 42;
System.out.println("(" + number + ")");

In this example, the number variable is initialized with the value 42, and then it is printed using the println method. The "(" and ")" characters are used to enclose the number variable in parentheses.

The output of this example would be the following string:

(42)

Keep in mind that this approach works for any type of number, including integers, floating-point numbers, and complex numbers. You can also use this approach to add parentheses around other types of values, such as strings or boolean values.

Alternatively, you can use the String.format method to format the number as a string with parentheses. Here's an example of how you could use the String.format method to add parentheses around a number:

int number = 42;
System.out.println(String.format("(%d)", number));

In this example, the String.format method is used to create a string with the "%d" format specifier, which represents an integer value. The number variable is passed as an argument to the String.format method, and it is replaced in the string with the corresponding value. Finally, the formatted string is printed using the println method.

The output of this example would be the same as the previous example:

(42)

Keep in mind that the String.format method is useful when you need to format numbers or other values with a specific pattern, such as a specific number of decimal places or a specific alignment. You can use a variety of format specifiers to specify the pattern of the formatted string. For more information, you can consult the documentation of the String.format method in the Java SE API.