How to Add One Day to a Date in Java?

Adding One Day to a Date in Java

When working with dates in Java, it's often necessary to adjust them by adding or subtracting a specific amount of time. One common task is to add one day to an existing date. Here's how to achieve this using various methods:

Solution 1: Calendar Class

The Calendar class provides a convenient way to manipulate dates. To add one day, use the following code:

Date dt = new Date();
Calendar c = Calendar.getInstance(); 
c.setTime(dt); 
c.add(Calendar.DATE, 1);
dt = c.getTime();

Solution 2: Joda-Time Library

For more advanced date handling, the Joda-Time library is highly recommended. It offers many features that the Date class lacks. To add a day with Joda-Time:

Date dt = new Date();
DateTime dtOrg = new DateTime(dt);
DateTime dtPlusOne = dtOrg.plusDays(1);

Solution 3: JSR 310 API (Java 8)

Java 8 introduced the JSR 310 API, inspired by Joda-Time. To add a day:

Date dt = new Date();
LocalDateTime.from(dt.toInstant()).plusDays(1);

Solution 4: org.apache.commons.lang3.time.DateUtils

The Apache Commons Lang library provides a simple way to add days:

Date dt = new Date();
dt = DateUtils.addDays(dt, 1)

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