ConstantPool (Apache Tomcat 8.0.53 API Documentation)

Apache Tomcat 8.0.53

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java.lang.Object
- org.apache.tomcat.util.bcel.classfile.ConstantPool

```
public class ConstantPool
extends java.lang.Object
```
This class represents the constant pool, i.e., a table of constants, of a parsed classfile. It may contain null references, due to the JVM specification that skips an entry after an 8-byte constant (double, long) entry. Those interested in generating constant pools programatically should see ConstantPoolGen.

See Also:
Constant

Method Summary

Methods
Modifier and Type	Method and Description
`Constant`	`getConstant(int index)` Get constant from constant pool.
`Constant`	`getConstant(int index, byte tag)` Get constant from constant pool and check whether it has the expected type.

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

- Method Detail
  - getConstant
```
public Constant getConstant(int index)
```
    Get constant from constant pool.
    
    Parameters:
    index - Index in constant pool
    
    Returns:
    Constant value
    See Also:
    Constant
  - getConstant
```
public Constant getConstant(int index,
                   byte tag)
                     throws ClassFormatException
```
    Get constant from constant pool and check whether it has the expected type.
    
    Parameters:
    index - Index in constant pool
    tag - Tag of expected constant, i.e., its type
    
    Returns:
    Constant value
    
    Throws:
    
    ClassFormatException - If the constant is not of the expected type
    See Also:
    Constant

Apache Tomcat 8.0.53

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