Example: package com.w3schools; import java.io.FileInputStream; import java.io.InputStream; public class FileToByteArray { public static void main(String args[]){ String fileName = "D:/Test files/file 3.txt"; InputStream is = null; try { is = new FileInputStream(fileName); byte content[] = new byte[2*1024]; int readCount = 0; while((readCount = is.read(content)) > 0){ System.out.println(new String(content, 0, readCount-1)); } } catch … Read more
We need to implement FilenameFilter class and override accept() method. Example: package com.w3schools; import java.io.File; import java.io.FilenameFilter; public class FilesFilter { public static void main(String args[]){ File file = new File("D:/Test files/"); String[] files = file.list(new FilenameFilter() { @Override public boolean accept(File dir, String name) { if(name.toLowerCase().endsWith(".txt")){ return true; } else { … Read more
The listFiles() method of File class is used to get the list of files in the folder or directory. Example: package com.w3schools; import java.io.File; public class ListFiles { public static void main(String args[]){ File file = new File("D:/Test files/"); File[] files = file.listFiles(); for(File f: files){ System.out.println(f.getName()); } } }package com.w3schools; import java.io.File; … Read more
The list() method of File class is used to get the list of file names in the folder or directory. Example: package com.w3schools; import java.io.File; public class ListFileNames { public static void main(String args[]){ File file = new File("D:/Test files/"); String[] fileList = file.list(); for(String name:fileList){ System.out.println(name); } } }package com.w3schools; import java.io.File; … Read more
Eclipse maven java project: Eclipse provides m2eclipse plugin to integrate Maven and Eclipse together. Steps to create maven java web project in eclipse: In eclipse, click on File menu → New → Maven Project. Select maven-archetype-webapp template to create java project and Click on Next button. Now provide the group Id, artifact Id and Package. … Read more
Eclipse maven java project: Eclipse provides m2eclipse plugin to integrate Maven and Eclipse together. Steps to create maven java project in eclipse: In eclipse, click on File menu → New → Maven Project. Select maven-archetype-quickstart template to create java project and Click on Next button. Now provide the group Id, artifact Id and Package. Click … Read more
Maven java webapp project: The archetype:generate command is used to create the simple maven java web project. First we have to navigate the terminal (*uix or Mac) or command prompt (Windows) to the folder where we want to create the Java web project. Syntax: mvn archetype:generate -DgroupId=groupid -DartifactId=project-name -DarchetypeArtifactId=maven-archetype-webapp -DinteractiveMode=booleanValuemvn archetype:generate -DgroupId=groupid -DartifactId=project-name -DarchetypeArtifactId=maven-archetype-webapp -DinteractiveMode=booleanValue … Read more
Maven java project: The archetype:generate command is used to create the simple maven java project. First we have to navigate the terminal (*uix or Mac) or command prompt (Windows) to the folder where we want to create the Java project. Syntax: mvn archetype:generate -DgroupId=groupid -DartifactId=project-name -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=booleanValuemvn archetype:generate -DgroupId=groupid -DartifactId=project-name -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=booleanValue Example: mvn archetype:generate … Read more
Maven repositories: Maven repositories are directories of packaged JAR files with extra meta-data. The meta-data is represented by POM files. A repository contains all the project jars, library jar, plugins and any other project specific artifacts. Types of maven repository: Local Repository Central Repository Remote Repository Maven repository search order: Local repository then Central repository … Read more
Maven plugins: A maven plugin represents a set of goals which provides the facility to add your own actions to the build process. Syntax to execute a plugin: mvn [plugin-name]:[goal-name]mvn [plugin-name]:[goal-name] Maven plugin types: 1. Build Plugins 2. Reporting Plugins Build Plugins: Build plugins are executed at the build time. Build plugins should be declared … Read more