Java tanh Function

The Java tanh Function is one of the Java Math Library function which is used to calculate the trigonometric hyperbolic tangent for the specified expression. In this article we will show you, How to write Math.tanh function in Java Programming language with example.

TIP: Please refer Java tan Function Function article to understand the Tangent Function.

Java tanh Function syntax

The basic syntax of the Math.tanh in Java Programming language is as shown below.

static double tanh(double number); //Return Type is Double

// In order to use in program:

Math.tanh(double number);

Number: It can be a number or a valid numerical expression for which you want to find hyperbolic Tangent value.

If the number argument is positive or negative number, Math.cosh function will return the hyperbolic tangent value.
If the number argument zero, Math.tanh function will return zero with same sign.
If the number argument is positive infinity, Math.tanh function will return the result as +1.0.
If the number argument is negative infinity, Math.tanh function will return the result as -1.0.
If the number argument is not a number, Math.tanh function will return NaN.

NOTE: The hyperbolic tangent of x can be defined as (e^x – e^-x) / (e^x + e^-x), where is Euler’s Number E.

Java tanh Function Example

The Java Math.tanh Function allows you to find the trigonometric hyperbolic Tangent for the numeric values. In this example, We are going to find the hyperbolic tangent values of both positive and negative values and display the output.

JAVA CODE

// Java Math.tanh Function

package TrigonometricFunctions;

public class TanhMethod {

public static void main(String[] args) {

double x = Math.tanh(13.65 - 10.95 + 4.38);

System.out.println("Hyperbolic Tangent value = " + x);

System.out.println("\nHyperbolic Tangent value of Positive Value = " + Math.tanh(14.25));

System.out.println("Hyperbolic Tangent value of Positive Value = " + Math.tanh(17.28));

System.out.println("\nHyperbolic Tangent value of Negative Value = " + Math.tanh(-24.85));

System.out.println("Hyperbolic Tangent value of Negative Value = " + Math.tanh(-10.95));

double m = Math.toRadians(45);

System.out.println("\nHyperbolic Tangent value of Negative Value = " + Math.tanh(m));

}

OUTPUT

ANALYSIS

First, We declared variable x of type Double and used the Java Math.tanh function directly on expression. Here, we used System.out.println statement to print the result as output.

1 2	double x = Math.tanh(13.65 - 10.95 + 4.38); System.out.println("Hyperbolic Tangent value = " + x);

Next, We used the Math.tanh Function directly on Positive double values.

1 2	System.out.println("\nHyperbolic Tangent value of Positive Value = " + Math.tanh(14.25)); System.out.println("Hyperbolic Tangent value of Positive Value = " + Math.tanh(17.28));

Next, We used the Math.tanh Function directly on Negative double values.

1 2	System.out.println("\nHyperbolic Tangent value of Negative Value = " + Math.tanh(-24.85)); System.out.println("Hyperbolic Tangent value of Negative Value = " + Math.tanh(-10.95));

Next, We declared variable of type Double and assigned the value. Here, we used the Math.toRadians function to convert 45 into equivalent radiant. Next, we used System.out.println statement to print the result as output.

1 2	double m = Math.toRadians(45); System.out.println("\nHyperbolic Tangent value of Negative Value = " + Math.tanh(m));

Java tanh on Array example

In this Java program we will show you, How to find the Hyperbolic Tangent values of bulk data. Here, we are going to declare an array of double type and find the Hyperbolic tangent values of an array elements.

JAVA CODE

package TrigonometricFunctions;

public class TanhMethodOnArrays {

public static void main(String[] args) {

double [] myArray = {0, 1, -2, 30, -4, 5, -0.920, -1.98, -6.48};

for (int i = 0; i < myArray.length; i++) {

System.out.format("Hyperbolic Tangent of Array Element %.2f = %.4f\n", myArray[i], Math.tanh(myArray[i]));

}

OUTPUT

ANALYSIS

First, We declared a double Array and assigned some random values.

1	double [] myArray = {0, 1, -2, 30, -4, 5, -0.920, -1.98, -6.48};

Next, We used the Java For Loop to iterate the Array. Within the For Loop, we initialized the i value as 0. Next, compiler will check for the condition (i < myArray.length). As along the condition is True statement inside the for loop will be executed.

TIP: myArray.length is used to find the length of an array.

1	for (int i = 0; i < myArray.length; i++) {

Following statements will print the output. If you observe the code snippet, we used the Math.tanh Function directly inside the System.out.format statement. Here, compiler will call the Math.tanh method (static double tanh(double number) ) to find the corresponding Tangent values.

1	System.out.format("Hyperbolic Tangent of Array Element %.2f = %.4f\n", myArray[i], Math.tanh(myArray[i]));

NOTE: If you want to find the hyperbolic Tangent value of a single item then use: Math.tanh(myArray[index_position])

Java tanh Function on Arraylist example

In this Java program we are going to declare an arraylist of double type and find the hyperbolic Tangent values of list elements.

JAVA CODE

package TrigonometricFunctions;

import java.util.ArrayList;

public class TanhMethodOnArrayList {

public static void main(String[] args) {

ArrayList<Double> myList = new ArrayList<Double>(5);

myList.add(0.45);

myList.add(2.49);

myList.add(-6.60);

myList.add(-4.75);

myList.add(10.68);

myList.add(-10.68);

for (double x : myList) {

System.out.format("Hyperbolic Tangent of ArrayList Item %.2f = %.4f \n", x, Math.tanh(x));

}

OUTPUT

ANALYSIS

First, We declared an ArrayList of integer type and assigned some random values.

ArrayList<Double> myList = new ArrayList<Double>(5);

myList.add(0.45);

myList.add(2.49);

myList.add(-6.60);

myList.add(-4.75);

myList.add(10.68);

myList.add(-10.68);

Next, We used the For Loop to iterate the double values in ArrayList

1	for (double x : myList) {

Following statements will print the output. If you observe the code snippet, we used the Math.tanh Function directly inside the System.out.format statement. Here, compiler will call the java math.tanh method ( static double tanh(double x) ) to find the corresponding Cosine values.

1	System.out.format("Hyperbolic Tangent of ArrayList Item %.2f = %.4f \n", x, Math.tanh(x));

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Java tanh Function syntax

Java tanh Function Example

Java tanh on Array example

Java tanh Function on Arraylist example

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