VMConstantPool (OpenJ9 JDK 11)

java.lang.Object
- com.ibm.j9ddr.vm29.j9.VMConstantPool

```
public final class VMConstantPool
extends Object
```
VMConstant pool value retrieval. The constant pool is referenced by constants from com.ibm.j9ddr.vm29.structure.J9ConstantPool. To find out what type the value is, refer to oti/vmconstantpool.xml, or look into the generated header ./oti/j9vmconstantpool.h.

Constructor Summary

Constructors
Constructor Description

VMConstantPool()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer`	`getClass(long index)`	Get a class from the constant pool.
`static J9ObjectFieldOffset`	`getFieldOffset(long index)`	Get a field offset from the constant pool.

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

- Constructor Detail
  - VMConstantPool
```
public VMConstantPool()
```
- Method Detail
  - getClass
```
public static com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer getClass(long index)
                                                                    throws CorruptDataException
```
    Get a class from the constant pool.
    
    Parameters:
    
    index - A J9VmconstantpoolConstants index into the constant pool. Must be for a class reference.
    
    Returns:
    
    Either the loaded class, or if its not in the constant pool, J9ClassPointer.NULL.
    
    Throws:
    
    CorruptDataException - If the CPShape of the index is not a class.
  - getFieldOffset
```
public static J9ObjectFieldOffset getFieldOffset(long index)
                                          throws CorruptDataException
```
    Get a field offset from the constant pool.
    
    Parameters:
    
    index - A J9VmconstantpoolConstants index into the constant pool. Must be for a static or instance field reference.
    
    Returns:
    
    Either the offset to the object, or null if the field's class is not resolved in the constant pool.
    
    Throws:
    
    CorruptDataException - If the field cannot be found in the related class or the CP index is not a field reference.