Lambda expressions are new feature of Java 8. With Lambda Expression function call sequence becomes more easier compared with earlier releases of Java. In this example, we will learn about Lambda expression and use it for Functional Interface. When an interface contains only one abstract method, we call it as functional interface
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Sometimes, we may need to do Date Parse from a given string in java. This is useful when we want to perform any date related calculations. For example, if we want to find number of days between two dates, it will be easy to get result if variables are date type rather than string. In this example, we will see how to parse a java date from the string. We will also study about the DateTimeFormatter class.
In this example, we will derive from a JInternalFrame to display html content via the JEditorPane. In the bottom, we have JTextField where you can set a title for the JInternalFrame. When you click Show Html, a static html content will be displayed in the JInternalFrame. You can open multiple JInternalFrame. The example shows static html content, but you can extend this example to ask the user to select a Html file from the disc.
This example has two toolbars in it. One is in the top part of the Frame window and other one is in the bottom part. Each of the toolbar contains three buttons on it and each button is assigned with one image icon. Very first button in the top toolbar shows a message when the user clicks it. When we proceed with the example, we will also learn how to use floating toolbar and study rollover behaviour.