再次编译，即可在控制台看到Ant的输出：
Buildfile: F:\eclipse-projects\Hello\build.xml init: compile: [mkdir] Created dir: F:\eclipse-projects\Hello\classes [javac] Compiling 2 source files to F:\eclipse-projects\Hello\classes test: [mkdir] Created dir: F:\eclipse-projects\Hello\report [junit] Running example.HelloTest [junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 0.02 sec pack: [mkdir] Created dir: F:\eclipse-projects\Hello\dist [jar] Building jar: F:\eclipse-projects\Hello\dist\hello.jar doc: [mkdir] Created dir: F:\eclipse-projects\Hello\doc [javadoc] Generating Javadoc [javadoc] Javadoc execution [javadoc] Loading source files for package example... [javadoc] Constructing Javadoc information... [javadoc] Standard Doclet version 1.4.2_04 [javadoc] Building tree for all the packages and classes... [javadoc] Building index for all the packages and classes... [javadoc] Building index for all classes... [javadoc] Generating F:\eclipse-projects\Hello\doc\stylesheet.css... [javadoc] Note: Custom tags that could override future standard tags:
@todo. To avoid potential overrides, use at least one period character (.) in custom tag names. [javadoc] Note: Custom tags that were not seen: @todo BUILD SUCCESSFUL Total time: 11 seconds
Ant依次执行初始化，编译，测试，打包，生成API文档一系列任务，极大地提高了开发效率。将来开发J2EE项目时，还可加入部署等任务。并且，即使脱离了Eclipse环境，只要正确安装了Ant，配置好环境变量ANT_HOME=<Ant解压目录>，Path=…;%ANT_HOME%\bin，在命令行提示符下切换到Hello目录，简单地键入ant即可。
