Tested on Windows 2000, with b11 mantis-beta build,

using

"javap java.lang.String "

gives

ERROR:Could not find java.lang.String


More curious is this case
=========================
javap -Xold java.lang.String

which gives the entire dump then also gives the above said error message..
Compiled from String.java
public final class java.lang.String extends java.lang.Object implements java.io.Serializable, java.lang.Comparable, java.lang.CharSequence {
    public static final java.util.Comparator CASE_INSENSITIVE_ORDER;
    public int hashCode();
    public int length();
    static {};
    public java.lang.String();
    public byte getBytes()[];
    public char toCharArray()[];
    public char charAt(int);
    public int indexOf(int);
    public int lastIndexOf(int);
    public int indexOf(int, int);
    public int lastIndexOf(int, int);
    public void getBytes(int, int, byte[], int);
    java.lang.String(int,int,char[]);
    public void getChars(int, int, char[], int);
    public java.lang.String(byte[]);
    public java.lang.String(byte[],int);
    public java.lang.String(byte[],int,int);
    public java.lang.String(byte[],int,int,int);
    public java.lang.String(char[]);
    public java.lang.String(char[],int,int);
    static int indexOf(char[], int, int, char[], int, int, int);
    static int lastIndexOf(char[], int, int, char[], int, int, int);
    public java.lang.CharSequence subSequence(int, int);
    public int compareTo(java.lang.Object);
    public boolean equals(java.lang.Object);
    public native java.lang.String intern();
    public java.lang.String toLowerCase();
    public java.lang.String toString();
    public java.lang.String toUpperCase();
    public java.lang.String trim();
    public static java.lang.String valueOf(char);
    public java.lang.String replace(char, char);
    public static java.lang.String valueOf(double);
    public static java.lang.String valueOf(float);
    public java.lang.String substring(int);
    public static java.lang.String valueOf(int);
    public java.lang.String substring(int, int);
    public boolean regionMatches(int, java.lang.String, int, int);
    public static java.lang.String valueOf(long);
    public int compareTo(java.lang.String);
    public int compareToIgnoreCase(java.lang.String);
    public int indexOf(java.lang.String);
    public int lastIndexOf(java.lang.String);
    public java.lang.String(java.lang.String);
    public boolean endsWith(java.lang.String);
    public boolean equalsIgnoreCase(java.lang.String);
    public boolean matches(java.lang.String);
    public boolean startsWith(java.lang.String);
    public byte getBytes(java.lang.String)[] throws java.io.UnsupportedEncodingException;
    public int indexOf(java.lang.String, int);
    public int lastIndexOf(java.lang.String, int);
    public boolean startsWith(java.lang.String, int);
    public static java.lang.String valueOf(boolean);
    public boolean regionMatches(boolean, int, java.lang.String, int, int);
    public java.lang.String(byte[],int,int,java.lang.String) throws java.io.UnsupportedEncodingException;
    public java.lang.String(byte[],java.lang.String) throws java.io.UnsupportedEncodingException;
    public static java.lang.String copyValueOf(char[]);
    public static java.lang.String valueOf(char[]);
    public static java.lang.String copyValueOf(char[], int, int);
    public static java.lang.String valueOf(char[], int, int);
    public java.lang.String(java.lang.StringBuffer);
    public boolean contentEquals(java.lang.StringBuffer);
    public static java.lang.String valueOf(java.lang.Object);
    public java.lang.String concat(java.lang.String);
    public java.lang.String split(java.lang.String)[];
    public java.lang.String split(java.lang.String, int)[];
    public java.lang.String toLowerCase(java.util.Locale);
    public java.lang.String toUpperCase(java.util.Locale);
    public java.lang.String replaceAll(java.lang.String, java.lang.String);
    public java.lang.String replaceFirst(java.lang.String, java.lang.String);
}
ERROR:Could not find java.lang.String