Executes a Java class within the Ant VM
This example illustrates how to call class file through build.xml file. The build.xml
file is used to compile and run the java file and print the calculated value on
command prompt. Here we are using only four targets, "clean" target
deletes any previous "build" directory; second one is used to create
"build" and "src" directories which depend on <target
name="clean">, after execution of the clean target, this
target will be executed; third one is used to compile the java file from
"src" directory, it transforms source files in to object files in the
appropriate location in the build directory and it depends on <target
name="prepare">; forth one is used to run the class file and
it depends on <target name="compile">. The debug
keyword is used to find the error and optimize is used to find resources
of source and destination directory. In the target run, fork="true"
is used to display output and failonerror is used to display error
report.
|
<?xml version="1.0"?>
<project name="add" default="run" basedir=".">
<target name="clean">
<delete dir="build"/>
</target>
<target name="prepare" depends="clean">
<mkdir dir="src"/>
<mkdir dir="build"/>
</target>
<target name="compile" depends="prepare">
<javac srcdir="src" destdir="build" debug="on" optimize="on"/>
</target>
<target name="run" depends="compile">
<java fork="true" failonerror="yes" classname="Addition" classpath="build">
<arg line=""/>
</java>
</target>
</project>
|
Simply copy and paste the following source code in the src directory and
then run with ant command. The following output will be displayed:
|
class Addition{
public static void main(String[]
args) {
int a=5;
int b=10;
int add = a + b;
System.out.println("Addition = " + add);
}
}
|
Download Source Code
|
Del.icio.us
Digg
Google
Spurl
Blink
Furl
Simpy
Y! MyWeb
