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<TITLE>Setting the Value of a System Property from the Command Line
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<h3>
e87.
Setting the Value of a System Property from the Command Line</h3>
A system property can be set or overridden by specifying the <code>-D</code>
option to the <code>java</code> command when running your program.
<pre>
java -D<font color="#0066ff"><i>my.prop</i></font>=<font color="#0066ff"><i>"my value"</i></font> <font color="#0066ff"><i>MyApp</i></font>
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// Get the value of the system property
String prop = System.getProperty(<font color="#0066ff"><i>"my.prop"</i></font>);
// my value
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Related Examples
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e86. <a class="eglink" href="GetSystemProperty.html?l=rel">
Getting and Setting the Value of a System Property
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e88. <a class="eglink" href="GetAllSysProps.html?l=rel">
Listing All System Properties
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See also:
<a class="eglink" href="/egs/java.lang/pkg.html?l=rel#Arrays">
Arrays
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<a class="eglink" href="/egs/java.lang/pkg.html?l=rel#Assertions">
Assertions
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Classes
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Commands
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Numbers
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<a class="eglink" href="/egs/java.lang/pkg.html?l=rel#Objects">
Objects
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<a class="eglink" href="/egs/java.lang/pkg.html?l=rel#Strings">
Strings
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Threads
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