In this source code example, we show you how to add hours to time in Java using Java 8 LocalTime class.

Add hours to time in Java

package com.ramesh.java8.datetime;

import java.time.LocalTime;

/**
 * Useful Java8DateUtiliy Methods
 * @author javaguides.net
 *
 */

public final class Java8DateUtility {
    /**
     * Add hours to time.
     * @param hours
     * @return
     */
    public static LocalTime addHoursToTime(int hours) {
        LocalTime time = LocalTime.now();
        LocalTime newTime = time.plusHours(hours); // adding two hours
        System.out.println("Time after 2 hours : " + newTime);
        return newTime;
    }
}

JUnit test case

package com.ramesh.java8.datetime;

import org.junit.Test;

/**
 * JUnit test cases for Java8DateUtiliy Methods
 * @author javaguides.net
 *
 */
public class Java8DateUtilityTest {

    @Test
    public void addHoursToTime() {
        System.out.println("Added hours to time :: " + Java8DateUtility.addHoursToTime(1));
    }
}

Run the JUnit test cases will print the output:

Added hours to time :: 19:40:51.641