Ant interview questions
Explain the concepts and capabilities of ANT.
Latest answer: Capabilities of ANT: ANT tool is extended by
using java classes. The configuration files are XML-based. Each task of
building directory tree is executed by using the object that implements the
Task interface.............
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Latest answer: Before start using ant, we should be clear about
the project name and the .java files and most importantly, the path where the
.class files are to be placed...............
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Latest answer: The following is the code snippet to set the
classpath in ant:
<path id=”build.classpath”>
<fileset dir=”${build.lib}”
includes=”**/*.jar/>
<fileset dir=”${build.class”}/>
</path>.................
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Latest answer: Properties in ant are set in an order. Once a
property is set, later the same property can not overwrite the previous one.
This process provides a good leverage of presetting all properties in one
location, and overwriting only the needed properties.................
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Latest answer: We can not modify the properties in ant. The
properties in ant are immutable in nature.................
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Latest answer: There is no need to use Runtime in ant. Because
ant has Runtime counterpart by name ExecTask. ExecTask is in the package
org.apache.tools.ant.taskdefs..............
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Latest answer: The following is an example to run a java
application in using ant:
<target name=”run” depends=”some.target”,some.other.target”>
<java classname=”${run.class}” fork=”yes”>
<classpath>.....................
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Latest answer: Ant script can be debugged in the following
ways: By echoing at the place to debug. The problem is easily known. This is
similar to printf () function in C and System.out.println() in Java............
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Latest answer: Define the user defined custom script and use
taskdef to define in the custom script..............
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Latest answer: 1. Copy the ant-contrib.jar to the directory
ant*/lib. Copy ant-contrib.jar to your ant*/lib directory.
2. Append the following code snippet to avail all the ant-contrib
tasks...............
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Latest answer: The org.apache.tools.ant.input.InputHandler
interface is used to implement the user input. To perform the user input, the
application creates InputRequest object and this object will be passed to
InputHandler..................
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answer
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Java methods are virtual by default. The virtual methods are the methods of
subclasses.................
A concrete class has concrete methods, i.e., with code and other functionality.
This class a may extend an abstract class or implements an
interface..................
SQL Exception is associated with a failure of a SQL statement. This exception
can be handled like an ordinary exception in a catch block..................
A task’s priority is an integer value. This value is used to identify the
relative order of execution with respect to other tasks..................
An event-listener interface allows describing the methods which must be
implemented by one of the event handler for a specific event..................
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