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Provides interfaces for tools which can be invoked from a program,
for example, compilers.
These interfaces and classes are required as part of the
Java™ Platform, Standard Edition (Java SE),
but there is no requirement to provide any tools implementing them.
Unless explicitly allowed, all methods in this package might throw a NullPointerException if given a null argument or if given a list or collection containing null elements. Similarly, no method may return null unless explicitly allowed.
This package is the home of the Java programming language compiler framework. This framework allows clients of the framework to locate and run compilers from programs. The framework also provides Service Provider Interfaces (SPI) for structured access to diagnostics (DiagnosticListener) as well as a file abstraction for overriding file access (JavaFileManager and JavaFileObject). See JavaCompiler for more details on using the SPI.
There is no requirement for a compiler at runtime. However, if a default compiler is provided, it can be located using the ToolProvider, for example:
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
It is possible to provide alternative compilers or tools through the service provider
mechanism.
For example, if com.vendor.VendorJavaCompiler is a provider of the JavaCompiler tool then its jar file would contain the file
META-INF/services/javax.tools.JavaCompiler. This file would contain the single line:
com.vendor.VendorJavaCompiler
If the jar file is on the class path, VendorJavaCompiler can be
located using code like this:
JavaCompiler compiler = ServiceLoader.load(JavaCompiler.class).iterator().next();
Author: Peter von der Ahé, Jonathan Gibbons Since: 1.6
/**
* Provides interfaces for tools which can be invoked from a program,
* for example, compilers.
*
* <p>These interfaces and classes are required as part of the
* Java™ Platform, Standard Edition (Java SE),
* but there is no requirement to provide any tools implementing them.
*
* <p>Unless explicitly allowed, all methods in this package might
* throw a {@linkplain java.lang.NullPointerException} if given a
* {@code null} argument or if given a
* {@linkplain java.lang.Iterable list or collection} containing
* {@code null} elements. Similarly, no method may return
* {@code null} unless explicitly allowed.
*
* <p>This package is the home of the Java programming language compiler framework. This
* framework allows clients of the framework to locate and run
* compilers from programs. The framework also provides Service
* Provider Interfaces (SPI) for structured access to diagnostics
* ({@linkplain javax.tools.DiagnosticListener}) as well as a file
* abstraction for overriding file access ({@linkplain
* javax.tools.JavaFileManager} and {@linkplain
* javax.tools.JavaFileObject}). See {@linkplain
* javax.tools.JavaCompiler} for more details on using the SPI.
*
* <p>There is no requirement for a compiler at runtime. However, if
* a default compiler is provided, it can be located using the
* {@linkplain javax.tools.ToolProvider}, for example:
*
* <p>{@code JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();}
*
* <p>It is possible to provide alternative compilers or tools
* through the {@linkplain java.util.ServiceLoader service provider
* mechanism}.
*
* <p>For example, if {@code com.vendor.VendorJavaCompiler} is a
* provider of the {@code JavaCompiler} tool then its jar file
* would contain the file {@code
* META-INF/services/javax.tools.JavaCompiler}. This file would
* contain the single line:
*
* <p>{@code com.vendor.VendorJavaCompiler}
*
* <p>If the jar file is on the class path, VendorJavaCompiler can be
* located using code like this:
*
* <p>{@code JavaCompiler compiler = ServiceLoader.load(JavaCompiler.class).iterator().next();}
*
* @author Peter von der Ahé
* @author Jonathan Gibbons
* @since 1.6
*/
package javax.tools;