Eclipse use 64 bit java

Содержание

(Free Web Tutorial)
Prerequisites
Objectives
Eclipse Prerequisite
Eclipse Download
Eclipse Install
Create a Test Java Project
Выбор версии Java в Eclipse

(Free Web Tutorial)

In this tutorial you will install Eclipse SDK, create your first Java Project and then create the Java Cert project for the «Free Java Core & Certification Training Web Tutorial».

Prerequisites

Have a JDK installed.
This tutorial has been tested in the following environment:
Date: 10/19/2016
OS: Win 10
JDK: Java SE 8u111

Objectives

Install Eclipse SDK,
Create your first Java Project
Create a Java Project from an existing source.
(Note: You will download all of the files for the Java Cert project for the «Free Java Core & Certification Training Web Tutorial» and setup a project.)

IDE — Interactive Development Environment
JDK — Java Development Kit
SDK — Software Development Kit

Eclipse Prerequisite

Java (VM) Settings
- Note: I cover setting the «JAVA_HOME» & «Path» variable in my Java JDK Download Install Tutorial
- Check #1: JAVA_HOME system variable
  Go to the DOS prompt
  Type: set JAVA_HOME
  Example results:
  JAVA_HOME=C:\_data\java\jdk1.8.0_111
Type: java.exe -version
Example Results: ( MAKE NOTE of the version and bit for Check #3)
java version «1.8.0_111»
Java(TM) SE Runtime Environment (build 1.8.0_111-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.111-b14, mixed mode)

Type: %JAVA_HOME%\bin\java.exe -version
Example Results: ( MAKE NOTE of the version and bit for Check #3)
java version «1.8.0_111»
Java(TM) SE Runtime Environment (build 1.8.0_111-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.111-b14, mixed mode)

Type: javaw.exe
Example Results:
Returns nothing. No errors either.

Type: javac.exe -fullversion
Example Results:
javac full version «1.8.0_111-b14»
- Error: The system cannot find the path specified.
  Fix: Modify the «path» «System Variable» to include «%JAVA_HOME%\bin»
Here are the two Java commands:
Eclipse Java (system’s JRE): java -version
Java JDK: %JAVA_HOME%\bin\java -version

Eclipse Download
- Prerequisites — JRE (Java Runtime Environment)
- OPTIONAL Reference: Checksum hash values
  - Checksum hash values (md5, sha256) are given for each executable file you download so you can verify that the downloaded file has not been modified.
  - Checksum Hash Tutorial — has reference to online and installed tools you can use to verify the downloads.
  Note: SHA-512 Checksum hash
  There is a button for the SHA-512 checksum value if you want to verify the download.
  
  The essential tools for any Java developer, including a Java IDE, a Git client, XML Editor, Mylyn, Maven and Gradle integration.
  
  Tools for Java developers creating Java EE and Web applications, including a Java IDE, tools for Java EE, JPA, JSF, Mylyn, EGit and others.
  
  The essential tools for any JavaScript developer, including JavaScript language support, Git client, Mylyn and editors for JavaScript, HTML, CSS and XML.
  
  The essential tools for any PHP developer, including PHP language support, Git client, Mylyn and editors for JavaScript, HTML, CSS and XML.
  
  The essential tools for Java and DSL developers, including a Java & Xtend IDE, a DSL Framework (Xtext), a Git client, XML Editor, and Maven integration.
  
  Java EE tools and BIRT reporting tool for Java developers to create Java EE and Web applications that also have reporting needs.
  
  A complete set of tools for developers who want to create Eclipse plug-ins, Rich Client Applications or Remote Application Platform (RCP+RAP), plus Maven and Gradle tooling, and an XML editor.
  
  This package contains Eclipse features that support the software development quality assurance process, such as Jubula and Mylyn.
  
  Tools for C, C++, Fortran, and UPC, including MPI, OpenMP, OpenACC, a parallel debugger, and remotely building, running and monitoring applications.
  
  Eclipse Scout is a Java/HTML5 framework to develop business applications that run on the desktop, on tablets and mobile devices. (http://www.eclipse.org/scout)
  - Older versions of Eclipse:
    http://wiki.eclipse.org/Older_Versions_Of_Eclipse
    http://archive.eclipse.org
  - Eclipse Neon Documentation: http://help.eclipse.org/neon/index.jsp
    See:
    Workbench User Guide
    Java development user guide
  Eclipse Install
  - Install Eclipse
    - In Win Explorer, double click on the exe to run the install.
    - Select the product «Eclipse IDE for Java Developers»
    - Installation Folder:
      C:\_data\eclipse\java-neon — this is my choice that I’ll use for this demo.
    - Click the «Install» button.
      Click «Accept Now»
      Click «Launch»
    - Screen: Select a directory as workspace
      - Using Win Explorer create the following directory to be used as Eclipse’s workspace:
        C:\_data\eclipse\wsMyEclipseTutorial
        (Note: Defaults to: C:\Users\\workspace)
      - Back at the Eclipse launch screen.
        Workspace: C:\_data\eclipse\wsMyEclipseTutorial — this is my choice for this demo.
        WARNING: Do not check the box for: Use this as the default and do not ask again
        Reason: Mentioned below.
      - Click OK
      - In bottom right corner, leave checked — Always show Welcome at start up.
        Note: You can always display the «Welcome» screen by: Help, Welcome
      - If you do accidentally click the check box here is how you put the option back.
        Eclipse workspace steps:
        Windows, Preferences, expand General, expand «Startup and Shutdown», Workspaces
        Check: Prompt for workspace on startup.
        Choose 10 or your choice for: Number of recent workspaces to remember.
        (Optional: Windows, Preferences, in the box at top type «workspace».)
      - Error Note: Exit Code = 13 (64bit Java needed)
        Java was started but returned exit code=13
        C:\. \javaw.exe -Dosgi.requiredJavaVersion=1.7
        
        Reason: You are running a 64bit version of Eclipse with a 32bit version of javaw.exe.
        
        Solution: Have eclipse.exe use a 64bit version of Java.
        
        Option 1: Pass a parm: eclipse.exe -vm %JAVA_HOME%\bin
        
        Option 2: Change your «Path» System Variable value to point to a 64bit version.
        
        Create a Test Java Project
        
        Launch Eclipse and select the workspace:
        C:\_data\eclipse\wsMyEclipseTutorial
        
        Close the «Welcome» window by clicking the X button.
        
        Create a test Java Project
        
        File, New, «Java Project»
        
        Project name: MyJavaTest
        Check: «Use default location» — should show: C:\_data\eclipse\wsMyEclipseTutorial\MyJavaTest
        
        JRE
        Use default: Select «Use an execution environment JRE:»
        Note: notice the value: JavaSE-1.8
        
        Project Layout
        Use default: Select «Create separate folders for sources and class files.»
        
        Click «Next»
        Notice the following subdirectories:
        src
        bin — default output folder (at bottom).
        
        Click «Finish»
        
        /**
        *
        */
        package com.michaelthomas.eclipsetutorial;
        
        /**
        * @author Michael Thomas
        *
        */
        public class MyApplication
        /**
        * @param args
        */
        public static void main(String[] args) System.out.println(«Hello World from an Application.»);
        
        >
        
        >
        
        «Eclipse Java Neon» does not have an «Uninstall» feature.
        
        Remove «Eclipse Java Neon» Software
        
        Delete the the install directory.
        Ex: C:\_data\eclipse\java-neon
        
        Win 7 — Create an entry in «Start»
        
        Using Windows Explorer, navigate to: c:\eclipse.
        
        Right click on the file «eclipse.exe» and choose «Create Shortcut».
        
        Now left click on the file «eclipse.exe — Shortcut» and drag it on top of the Windows «Start» icon in the very bottom left corner of your computer.
        Windows will «pin» it to the «Start» button.
        
        Note: You can do the same thing to your Desktop.
        
        Right click on «Start», choose «Explorer all users»,
        
        Click on «Programs»
        
        Click «File», «New», «Shortcut»
        
        For location of item, browse to: C:\eclipse\eclipse.exe
        
        Click next.
        
        Name for the shortcut: Eclipse
        
        Click «Finish»
        
        Click «Start», «All Programs»
        
        Click «Eclipse» to launch the program.
        
        Источник
        
        Выбор версии Java в Eclipse
        
        Для выбора версии Java в Eclipse выберите пункт главного меню Window ➣ Preferences, как показано на картинке ниже.
        
        Preferences» width=»650″ height=»300″/>
        В открывшемся окне в дереве слева раскройте узел Java ➣ Installed JREs:
        
        В следующем окне выберите каталог, в котором установлена, например, JDK 17:
        
        В результате окно станет выглядеть примерно вот так:
        
        Кликните на экранную кнопку “Finish” в правом нижнем углу окна.
        
        В окне “Installed JREs” теперь будет новый пункт с добавленной JDK. Выберите её и кликните на “Apply and Close”:
        
        Теперь вы можете обновить проекты (для проектов Maven комбинация клавиш Alt+F5).
        
        Кроме версии Java, с которой Eclipse собирает и запускает проекты, есть ещё версия Java, на которой он запускается сам.
        
        Это могут быть две абсолютно разные версии. Версия Java, на которой запускается Eclipse, указывается в файле “eclipse.ini”. В самом файле написано обычно что-то вроде:
        
        Источник
        
        Читайте также: Java class compiled code

Eclipse use 64 bit java

(Free Web Tutorial)

Prerequisites

Objectives

Eclipse Prerequisite

Eclipse Download

Eclipse Install

Create a Test Java Project

Выбор версии Java в Eclipse