在类路径中包括Java 1.8而不指定构建

Question

I am working on a project with two other people. We are all on the same version of Eclipse (Mars.1), but we occasionally have different versions of the Java library on our machines solely because one of us has upgraded and the others haven't (yet). This is transient, but clearly causes build problems.

Here is what the .classpath looks like (NOTE: I manually inserted a line break on the line that references the JRE_CONTAINER to help you avoid scrolling the line):

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
    <classpathentry kind="src" path="src"/>
    <classpathentry kind="src" path="res"/>
    <classpathentry exported="true" kind="lib" path="lib/swingx-all-1.6.4.jar"/>
    <classpathentry exported="true" kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/
        org.eclipse.jdt.internal.launching.macosx.MacOSXType/Java SE 8 [1.8.0_25]">
            <attributes>
                <attribute name="owner.project.facets" value="java"/>
            </attributes>
        </classpathentry>
        <classpathentry kind="output" path="build/classes"/>
    </classpath>

As you can see, the line specifies the build. Is it possible to specify it in such a way that specific build is not included?

Answer 1

Yeah, that happened to us as well, the solution was to remove the .classpath file from the code repository (Git, SVN, etc) and put it in the ignored files list ( .gitignore file or whatever you use).

Also remove the .classpath file from every developer's workspace, and Eclipse will regenerate this file specifically for your environment.

This will avoid any further issues with different minor java versions.

Edit : Since you mentioned you are not using any build system, here is a minimal pom.xml so that you can convert your project into a Maven project:

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>your-organization</groupId>
    <artifactId>your-project-or-module-name</artifactId>
    <version>1.0.0</version>
    <packaging>jar</packaging>

    <name>NameOfTheProject</name>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>

        <!-- Reference your libraries here -->
        <!-- Maven will download them automatically :O -->

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>${java.version}</source>
                    <target>${java.version}</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

Here's an Introduction to the standard directory layout and here's a guide on Specifying resource directories .