Java Module java.base Package java.lang Class Compiler（JDK11）

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java.lang.Object
- java.lang.Compiler

```
@Deprecated(since="9",
            forRemoval=true)
public final class Compiler
extends Object
```
Deprecated, for removal: This API element is subject to removal in a future version.
JIT compilers and their technologies vary too widely to be controlled effectively by a standardized interface. As such, many JIT compiler implementations ignore this interface, and are instead controllable by implementation-specific mechanisms such as command-line options. This class is subject to removal in a future version of Java SE.
The Compiler class is provided to support Java-to-native-code compilers and related services. By design, the Compiler class does nothing; it serves as a placeholder for a JIT compiler implementation. If no compiler is available, these methods do nothing.
Since:
1.0

Method Summary

All Methods Static Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`static Object`	`command(Object any)`	Deprecated, for removal: This API element is subject to removal in a future version. Examines the argument type and its fields and perform some documented operation.
`static boolean`	`compileClass(Class<?> clazz)`	Deprecated, for removal: This API element is subject to removal in a future version. Compiles the specified class.
`static boolean`	`compileClasses(String string)`	Deprecated, for removal: This API element is subject to removal in a future version. Compiles all classes whose name matches the specified string.
`static void`	`disable()`	Deprecated, for removal: This API element is subject to removal in a future version. Cause the Compiler to cease operation.
`static void`	`enable()`	Deprecated, for removal: This API element is subject to removal in a future version. Cause the Compiler to resume operation.

Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - compileClass
```
public static boolean compileClass(Class<?> clazz)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    Compiles the specified class.
    Parameters:
    clazz - A class
    Returns:
    true if the compilation succeeded; false if the compilation failed or no compiler is available
    Throws:
    NullPointerException - If clazz is null
  - compileClasses
```
public static boolean compileClasses(String string)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    Compiles all classes whose name matches the specified string.
    Parameters:
    string - The name of the classes to compile
    Returns:
    true if the compilation succeeded; false if the compilation failed or no compiler is available
    Throws:
    NullPointerException - If string is null
  - command
```
public static Object command(Object any)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    Examines the argument type and its fields and perform some documented operation. No specific operations are required.
    Parameters:
    any - An argument
    Returns:
    A compiler-specific value, or null if no compiler is available
    Throws:
    NullPointerException - If any is null
  - enable
```
public static void enable()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    Cause the Compiler to resume operation.
  - disable
```
public static void disable()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    Cause the Compiler to cease operation.

本文分类：JavaAPI
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Java Module java.base Package java.lang Class Compiler（JDK11）

Class Compiler

Method Summary

Methods declared in class java.lang.Object

Method Detail

compileClass

compileClasses

command

enable

disable