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.

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