Summary
-------

Add explicit constructors to the public classes in `java.lang` and `java.io` relying on default constructors.

Problem
-------

Using default constructors is not a good practice for official types, they allow the creation of accidental constructors and do not provide a location for javadoc.

Solution
--------

Add the constructors to the types in question, deprecating for removal constructors that are not useful and seem to have been allowed by accident.

Specification
-------------

    --- old/src/java.base/share/classes/java/io/InputStream.java	2019-09-06 11:11:22.330589001 -0700
    +++ new/src/java.base/share/classes/java/io/InputStream.java	2019-09-06 11:11:22.146589001 -0700
    @@ -56,6 +56,11 @@
         private static final int DEFAULT_BUFFER_SIZE = 8192;
     
         /**
    +     * Constructor for subclasses to call.
    +     */
    +    public InputStream() {}
    +
    +    /**
          * Returns a new {@code InputStream} that reads no bytes. The returned
          * stream is initially open.  The stream is closed by calling the
          * {@code close()} method.  Subsequent calls to {@code close()} have no
    --- old/src/java.base/share/classes/java/io/ObjectInputStream.java	2019-09-06 11:11:22.838589001 -0700
    +++ new/src/java.base/share/classes/java/io/ObjectInputStream.java	2019-09-06 11:11:22.646589001 -0700
    @@ -1321,6 +1321,10 @@
          * Provide access to the persistent fields read from the input stream.
          */
         public abstract static class GetField {
    +        /**
    +         * Constructor for subclasses to call.
    +         */
    +        public GetField() {}
     
             /**
              * Get the ObjectStreamClass that describes the fields in the stream.
    --- old/src/java.base/share/classes/java/io/ObjectOutputStream.java	2019-09-06 11:11:23.346589001 -0700
    +++ new/src/java.base/share/classes/java/io/ObjectOutputStream.java	2019-09-06 11:11:23.162589001 -0700
    @@ -879,6 +879,10 @@
          * @since 1.2
          */
         public abstract static class PutField {
    +        /**
    +         * Constructor for subclasses to call.
    +         */
    +        public PutField() {}
     
             /**
              * Put the value of the named boolean field into the persistent field.
    --- old/src/java.base/share/classes/java/io/OutputStream.java	2019-09-06 11:11:23.866589001 -0700
    +++ new/src/java.base/share/classes/java/io/OutputStream.java	2019-09-06 11:11:23.674589001 -0700
    @@ -47,6 +47,11 @@
      */
     public abstract class OutputStream implements Closeable, Flushable {
         /**
    +     * Constructor for subclasses to call.
    +     */
    +    public OutputStream() {}
    +
    +    /**
          * Returns a new {@code OutputStream} which discards all bytes.  The
          * returned stream is initially open.  The stream is closed by calling
          * the {@code close()} method.  Subsequent calls to {@code close()} have
     --- old/src/java.base/share/classes/java/lang/InheritableThreadLocal.java	2019-09-06 11:11:24.394589001 -0700
    +++ new/src/java.base/share/classes/java/lang/InheritableThreadLocal.java	2019-09-06 11:11:24.182589001 -0700
    @@ -52,6 +52,11 @@
     
     public class InheritableThreadLocal<T> extends ThreadLocal<T> {
         /**
    +     * Creates an inheritable thread local variable.
    +     */
    +    public InheritableThreadLocal() {}
    +
    +    /**
          * Computes the child's initial value for this inheritable thread-local
          * variable as a function of the parent's value at the time the child
          * thread is created.  This method is called from within the parent
       --- old/src/java.base/share/classes/java/lang/ThreadDeath.java	2019-09-06 11:11:25.486589001 -0700
        +++ new/src/java.base/share/classes/java/lang/ThreadDeath.java	2019-09-06 11:11:25.234589001 -0700
        @@ -49,4 +49,9 @@
         public class ThreadDeath extends Error {
             @java.io.Serial
             private static final long serialVersionUID = -4417128565033088268L;
        +
        +    /**
        +     * Constructs a {@code ThreadDeath}.
        +     */
        +    public ThreadDeath() {}
         }
        --- old/src/java.base/share/classes/java/lang/invoke/ConstantBootstraps.java	2019-09-06 11:11:26.846589001 -0700
        +++ new/src/java.base/share/classes/java/lang/invoke/ConstantBootstraps.java	2019-09-06 11:11:26.582589001 -0700
        @@ -40,6 +40,12 @@
          * @since 11
          */
         public final class ConstantBootstraps {
        +    /**
        +     * Do not call.
        +     */
        +    @Deprecated(forRemoval=true, since="14")
        +    public ConstantBootstraps() {}
        +
             // implements the upcall from the JVM, MethodHandleNatives.linkDynamicConstant:
             /*non-public*/
             static Object makeConstant(MethodHandle bootstrapMethod,
        --- old/src/java.base/share/classes/java/lang/reflect/Modifier.java	2019-09-06 11:11:27.538589001 -0700
        +++ new/src/java.base/share/classes/java/lang/reflect/Modifier.java	2019-09-06 11:11:27.274589001 -0700
        @@ -43,6 +43,12 @@
          * @since 1.1
          */
         public class Modifier {
        +    /**
        +     * Do not call.
        +     */
        +    @Deprecated(forRemoval=true, since="14")
        +    public Modifier() {}
        +
         
             /**
              * Return {@code true} if the integer argument includes the