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How to put comment in Ant | Comments in Apache Ant

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How to put comment in Ant | Comments in Apache Ant

Method 1:

<!– Comments are just as important in buildfiles, do not –>
<!– avoid writing them! –>
<!– Example build file for “Ant: The Definitive Guide” –>
<!– and its sample project: irssibot –>

Method 2: Echo
Description
Writes a message to the Ant logging facilities. A message may be supplied
as nested text to this task.
Echoes a message to the current loggers and listeners which means System.out unless overridden. A level can be specified, which controls at what logging level the message is filtered at.
The task can also echo to a file, in which case the option to append rather than overwrite the file is available, and the level option is ignored

Parameters

Attribute Description

Required

message the message to echo.

No. Text may also be included in a character section within this element. If neither is included a blank line will be emitted in the output.

file the file to write the message to.

No

append Append to an existing file (or open a new file / overwrite an existing file)?

No – default is false.

level Control the level at which this message is reported. One of “error”, “warning”, “info”, “verbose”, “debug” (decreasing order)

No – default is “warning”.

encoding encoding to use, default is “”; the local system encoding. since Ant 1.7

No

Examples
Style 1:
<echo message=”Hello, world”/>

Style 2:
<echo message=”Embed a line break:${line.separator}”/>

Style 3:
<echo>Embed another:${line.separator}</echo>

Style 4:
<echo>This is a longer message stretching over
two lines.
</echo>

Style 5:
<echo>
This is a longer message stretching over
three lines; the first line is a blank
</echo>

Style 5:
<echo message=”Deleting drive C:” level=”debug”/>
A message which only appears in -debug mode.

Style 6:
<echo level=”error”>
Imminent failure in the antimatter containment facility.
Please withdraw to safe location at least 50km away.
</echo>
A message which appears even in -quiet mode.

Style 7:
<echo file=”runner.csh” append=”false”>#\!/bin/tcsh
java-1.3.1 -mx1024m ${project.entrypoint} $$*
</echo>
Generate a shell script by echoing to a file. Note the use of a double $ symbol to stop Ant filtering out the single $ during variable expansion
Depending on the loglevel Ant runs, messages are print out or silently ignored:

Ant-Statement

-quiet, -q

no statement

-verbose, -v

-debug, -d

<echo message=”This is error message.” level=”error” />

ok

ok

ok

ok

<echo message=”This is warning message.” />

ok

ok

ok

ok

<echo message=”This is warning message.” level=”warning” />

ok

ok

ok

ok

<echo message=”This is info message.” level=”info” />

not logged

ok

ok

ok

<echo message=”This is verbose message.” level=”verbose” />

not logged

not logged

ok

ok

<echo message=”This is debug message.” level=”debug” />

not logged

not logged

not logged

ok

Method 3:
Description

Rajesh Kumar
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