props.html
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<TITLE>Reading and Writing a Properties File
(Java Developers Almanac Example)
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<h3>
e365.
Reading and Writing a Properties File</h3>
<pre>
// Read properties file.
Properties properties = new Properties();
try {
properties.load(new FileInputStream(<font color="#0066ff"><i>"filename.properties"</i></font>));
} catch (IOException e) {
}
// Write properties file.
try {
properties.store(new FileOutputStream(<font color="#0066ff"><i>"filename.properties"</i></font>), null);
} catch (IOException e) {
}
</pre>
Here is an example of the contents of a properties file:
<pre>
# a comment
! a comment
a = a string
b = a string with escape sequences \t \n \r \\ \" \' \ (space) \u0123
c = a string with a continuation line \
continuation line
d.e.f = another string
</pre>
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Related Examples
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e366. <a class="eglink" href="GetSetProps.html?l=rel">
Getting and Setting Properties
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See also:
<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Arrays">
Arrays
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Bits">
Bits
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Collections">
Collections
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Dates">
Dates
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Hash%20Tables">
Hash Tables
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Lists">
Lists
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Sets">
Sets
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Sorted%20Collections">
Sorted Collections
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Time">
Time
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<a class="eglink" href="/egs/java.util/pkg.html?l=rel#Timers">
Timers
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