Tag Archives: Example

IntelliJ IDEA – Create Spring Boot Application

This is how to create spring boot application from IntelliJ IDEA. 1. On the top IDE menu choose “File” -> “New” -> “Project…” 2. Setup JDK 3. Fill project details like group artifact type of build tools (maven or gradle) programming language (java, kotlin, groovy) packaging (jar or war) file application name application description package (com.example.module-name) 4. Choose… Read More »

How to Use Spring JdbcTemplate

This is how to use spring JdbcTemplate in spring boot application. In this example i’m using : Spring boot 2.0.2.RELEASE Maven 3.5.3 for build tools Java 1.8 How to Use Spring JdbcTemplate First import spring jdbc library: <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> Second, create new java class for JdbcTemplate configuration like this: @Component public class JdbcConfig { @Value(“${spring.datasource.driverClassName}”) String… Read More »

Read a File in Java Stream Full Examples

Read a File in Java – I’m so happy because in Java 8 you can use Files.lines to read file as Stream. In this tutorial, i’ll show to you how to read a file using Java Stream with Java 10 (Read a File in Java). 1. Java Read File + Stream package com.cimblo.javacodeexample.read; import java.io.IOException; import java.nio.file.Files; import java.nio.file.Paths; /** *… Read More »

Read File in Java 10 Using FileInputStream

In this Java tutorial i’ll share about how to “Read File in Java 10 Using FileInputStream”. In Java, FileInputStream is a bytes stream class that’s used to read bytes from file. The following example will use FileInputStream to read a file named “C:/PromoTiketTraveloka.txt” and display its content to console. Before starting trying this example, please prepare the file before. Read File in… Read More »

Write to File in Java 10 Using FileOutputStream

In this java tutorial we will learn about “Write to File in Java” with FileOutputStream. FileOutputStream is a bytes stream class that’s used to handle raw binary data. To write the data to file, first you must convert the data into bytes and then save it to file. Let’s see below for full java example. Write to File in Java… Read More »

How To Check File Exists In Java 10

This is a sample Java source code about “How To Check File Exists In Java 10”. To determine whether a file is exist in your file system, you can use the Java IO File.exists(). How To Check File Exists In Java 10 For example i am using java 10 with syntactic sugar keyword: package com.cimblo.io; import java.io.File; public static… Read More »

How to Read an Object from file in Java

In this java example and tutorial about “How to Read an Object from file in Java”, you will learn how to read an object from the saved file or how to deserialize the serialized file. In the previous java example, you learn about how to write an Object into a file. The deserialization process is quite similar with the… Read More »

How to Write an Object to file in Java

In this java tutorial i will share about “How to Write an Object to file in Java”. Java object can write into a file for future access, this is called Serialization. In order to do this, you have to implement the Serializable interface, and use ObjectOutputStream to write objects into a file. FileOutputStream fout = new FileOutputStream(“c:\\temp\\address.ser”); ObjectOutputStream oos = new ObjectOutputStream(fout); oos.writeObject(address);… Read More »

How to open a PDF file in Java on Windows / Any Platform

In Java development, sometimes we need to open a PDF file with java code. So in this java tutorial and example, we will show you two ways to open a PDF file with Java. 1. rundll32 – Windows Platform Solution In Windows, you can use “rundll32” command to launch a PDF file, see example : package com.cimblo.jdbc; import… Read More »