ClassFormatOutput (Apache Derby V10.14 Internals)

java.lang.Object
- java.io.OutputStream
- - java.io.FilterOutputStream
  - - java.io.DataOutputStream
    - - org.apache.derby.iapi.services.classfile.ClassFormatOutput

All Implemented Interfaces:

java.io.Closeable, java.io.DataOutput, java.io.Flushable, java.lang.AutoCloseable
```
public final class ClassFormatOutput
extends java.io.DataOutputStream
```
A wrapper around DataOutputStream to provide input functions in terms of the types defined on pages 83 of the Java Virtual Machine spec. For this types use these methods of DataOutputStream
- float - writeFloat
- long - writeLong
- double - writeDouble
- UTF/String - writeUTF
- U1Array - write(byte[])

Field Summary
- Fields inherited from class java.io.DataOutputStream
  written
- Fields inherited from class java.io.FilterOutputStream
  out

Constructor Summary

Constructors
Constructor Description

ClassFormatOutput()

ClassFormatOutput(int size)

ClassFormatOutput(java.io.OutputStream stream)

Constructors
Constructor	Description
`ClassFormatOutput()`
`ClassFormatOutput(int size)`
`ClassFormatOutput(java.io.OutputStream stream)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`byte[]`	`getData()`	Get a reference to the data array the class data is being built in.
`(package private) static void`	`limit(java.lang.String name, int limit, int value)`	Throw an ClassFormatError if a limit of the Java class file format is reached.
`void`	`putU1(int i)`
`void`	`putU2(int i)`
`void`	`putU2(java.lang.String limit, int i)`
`void`	`putU4(int i)`
`void`	`writeTo(java.io.OutputStream outTo)`

Methods inherited from interface java.io.DataOutput
write

Methods inherited from class java.io.DataOutputStream
flush, size, write, write, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFloat, writeInt, writeLong, writeShort, writeUTF

Methods inherited from class java.io.FilterOutputStream
close, write

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

Constructor Detail

ClassFormatOutput
```
public ClassFormatOutput()
```

ClassFormatOutput
```
public ClassFormatOutput(int size)
```

ClassFormatOutput

public ClassFormatOutput(java.io.OutputStream stream)

Method Detail

putU1

public void putU1(int i)
           throws java.io.IOException

Throws:: java.io.IOException

putU2

public void putU2(int i)
           throws java.io.IOException

Throws:: java.io.IOException

putU2

public void putU2(java.lang.String limit,
                  int i)
           throws java.io.IOException

Throws:: java.io.IOException

putU4

public void putU4(int i)
           throws java.io.IOException

Throws:: java.io.IOException

writeTo

public void writeTo(java.io.OutputStream outTo)
             throws java.io.IOException

Throws:: java.io.IOException

getData
```
public byte[] getData()
```
Get a reference to the data array the class data is being built in. No copy is made.

limit
```
static void limit(java.lang.String name,
                  int limit,
                  int value)
           throws java.io.IOException
```
Throw an ClassFormatError if a limit of the Java class file format is reached.

Parameters:

name - Terse limit description from JVM spec.

limit - What the limit is.

value - What the value for the current class is

Throws:

java.io.IOException - Thrown when limit is exceeded.

Class ClassFormatOutput

Field Summary

Fields inherited from class java.io.DataOutputStream

Fields inherited from class java.io.FilterOutputStream

Constructor Summary

Method Summary

Methods inherited from interface java.io.DataOutput

Methods inherited from class java.io.DataOutputStream

Methods inherited from class java.io.FilterOutputStream

Methods inherited from class java.lang.Object

Constructor Detail

ClassFormatOutput

ClassFormatOutput

ClassFormatOutput

Method Detail

putU1

putU2

putU2

putU4

writeTo

getData

limit