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switch paragraph order in java api doc

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walterhiggins 2014-01-06 20:59:59 +00:00
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docs/Using-Java-APIs-In-Javascript.md
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@ -1,47 +1,10 @@
# Using Java APIs in Javascript
## Using java.lang package classes
ScriptCraft uses the Javascript Engine bundled with Java 6 and later
versions. This means that all of the core Java classes can be used
from within ScriptCraft. For example, in Java the following code will
print out the `user.dir` and `user.timezone` properties...
System.out.println( System.getProperty( "user.dir" ) );
System.out.println( System.getProperty( "user.timezone" ) );
... In Java, any classes in the `java.lang` package don't need to be
prefixed with the package so the `java.lang.System` class can simply
be written as `System`. In Javascript you need to write...
println( java.lang.System.getProperty( "user.dir" ) );
println( java.lang.System.getProperty( "user.timezone" ) );
... the `println()` function is one of the default functions provided
by the JS Engine in Java so there is no need to add the class name
prefix, but for other System class methods you need to explicitly
include the package name e.g. `java.lang.`. If you are using the
System class in a number of statements you can save yourself some
typing by declaring a System variable and using that instead of the
fully-qualified package and class name...
var System = java.lang.System;
println( System.getProperty( "user.dir" ) );
println( System.getProperty( "user.timezone" ) );
The JS Engine provides an `importPackage()` function which can be used
to import packages. This also saves you having to type full package
names before classes. For example...
importPackage(java.util);
var hMap = new HashMap();
hMap.put('name','Walter');
... makes all of the classes in the Java Library's `java.util` package
available for use without having to use the `java.util`
prefix. However, importing the `java.lang` package is not recommended
as some of the java.lang classes (e.g. String, Object) conflict with
Javascript Object types.
from within ScriptCraft. In addition, all of the Bukkit API can be
used from Javascript too. There are some things to consider when using
Java classes in Javascript...
## Using Java Beans
@ -103,6 +66,48 @@ by one of the Player classes super-classes. You'll see the
inherited from interface org.bukkit.entity.Entity** in the
[Player][bukpl] javadoc page.
## Using java.lang package classes
In Java the following code will print out the `user.dir` and
`user.timezone` properties...
System.out.println( System.getProperty( "user.dir" ) );
System.out.println( System.getProperty( "user.timezone" ) );
... In Java, any classes in the `java.lang` package don't need to be
prefixed with the package so the `java.lang.System` class can simply
be written as `System`. However, in Javascript classes in the
`java.lang` package need to be fully qualified so you need to write...
println( java.lang.System.getProperty( "user.dir" ) );
println( java.lang.System.getProperty( "user.timezone" ) );
... the `println()` function is one of the default functions provided
by the JS Engine in Java so there is no need to add the class name
prefix, but for other System class methods you need to explicitly
include the package name e.g. `java.lang.`. If you are using the
System class in a number of statements you can save yourself some
typing by declaring a System variable and using that instead of the
fully-qualified package and class name...
var System = java.lang.System;
println( System.getProperty( "user.dir" ) );
println( System.getProperty( "user.timezone" ) );
The JS Engine provides an `importPackage()` function which can be used
to import packages. This also saves you having to type full package
names before classes. For example...
importPackage(java.util);
var hMap = new HashMap();
hMap.put('name','Walter');
... makes all of the classes in the Java Library's `java.util` package
available for use without having to use the `java.util`
prefix. However, importing the `java.lang` package is not recommended
as some of the java.lang classes (e.g. String, Object) conflict with
Javascript Object types.
## Summary
When writing modules or plugins in ScriptCraft, you can access and