Package org.apache.tomcat.util.bcel.classfile

Class 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 programmatically should see ConstantPoolGen.
    See Also:
    Constant

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      Constant getConstant​(int index)
      Gets constant from constant pool.
      Constant getConstant​(int index, byte tag)
      Gets 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)
        Gets 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
        Gets 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