# Java Math Class static double rint(double d) with example

Java Math Class static double rint(double d) method: Here, we are going to learn about the static double rint(double d) method of Math Class with its syntax and example.
Submitted by Preeti Jain, on September 06, 2019

## Math Class static double rint(double d)

• This method is available in java.lang package.
• This method is used to return the double type value and if the value of the given argument after decimal point is greater than 4 then the value is incremented by 1 before the decimal point is returned else if the value of the given argument after decimal point is less than or equal to 4 then the same value before the decimal point is returned.
• This is a static method, so it is accessible with the class name too.
• The return type of this method is double, it returns the double floating point number which will be equivalent to mathematical integer.
• In this method, we pass only one argument of double type.
• This method does not throw any exception.

Syntax:

```    public static double rint(double d){
}
```

Parameter(s): double d – a double type of value to round to integer.

Return value:

The return type of this method is double, it returns the rounded (to integer) value.

Note:

• If we pass "NaN" (Not a Number), it returns the same value "NaN".
• If we pass infinity, it returns the same (i.e. infinity).
• If we pass zero (-0 or 0), it returns the same value.

### Java program to demonstrate example of rint(double d) method

```// Java program to demonstrate the example of
// rint(double d) method of Math Class.

public class RintMethod {
public static void main(String[] args) {
// declaring the variable
double d1 = -0.0;
double d2 = 0.0;
double d3 = -1.0 / 0.0;
double d4 = 1.0 / 0.0;
double d5 = 1234.56;
double d6 = 1234.12;

// Here , we will get (-0.0) because we are passing parameter
// whose value is (-0.0)
System.out.println("Math.rint(d1): " + Math.rint(d1));

// Here , we will get (0.0) and we are passing parameter
// whose value is (0.0)
System.out.println("Math.rint(d2): " + Math.rint(d2));

// Here , we will get (-Infinity) and we are passing parameter
// whose value is (-Infinity)
System.out.println("Math.rint(d3): " + Math.rint(d3));

// Here , we will get (Infinity) and we are passing parameter
// whose value is (Infinity)
System.out.println("Math.rint(d4): " + Math.rint(d4));

// Here , we will get (1235.0) and we are passing parameter
// whose value is (1234.56)
System.out.println("Math.rint(d5): " + Math.rint(d5));

// Here , we will get (1234.0) and we are passing parameter
// whose value is (1234.12)
System.out.println("Math.rint(d6): " + Math.rint(d6));
}
}
```

Output

```E:\Programs>javac RintMethod.java

E:\Programs>java RintMethod
Math.rint(d1): -0.0
Math.rint(d2): 0.0
Math.rint(d3): -Infinity
Math.rint(d4): Infinity
Math.rint(d5): 1235.0
Math.rint(d6): 1234.0
```

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