JDK 1.1 Source Code Directory
JDK 1.1 source code directory contains Java source code for JDK 1.1 core classes:
"C:\fyicenter\jdk-1.1.8\src".
Here is the list of Java classes of the JDK 1.1 source code:
✍: FYIcenter
⏎ java/io/RandomAccessFile.java
/*
* @(#)RandomAccessFile.java 1.35 01/12/10
*
* Copyright 2002 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package java.io;
import java.io.File;
/**
* Instances of this class support both reading and writing to a
* random access file. An application can modify the position in the
* file at which the next read or write occurs.
* This class provides a sense of security
* by offering methods that allow specified mode accesses of
* read-only or read-write to files.
*
* @author unascribed
* @version 1.35, 12/10/01
* @since JDK1.0
*/
public
class RandomAccessFile implements DataOutput, DataInput {
private FileDescriptor fd;
/**
* Creates a random access file stream to read from, and optionally
* to write to, a file with the specified name.
* <p>
* The mode argument must either be equal to <code>"r"</code> or
* <code>"rw"</code>, indicating either to open the file for input or
* for both input and output.
*
* @param name the system-dependent filename.
* @param mode the access mode.
* @exception IllegalArgumentException if the mode argument is not equal
* to <code>"r"</code> or to <code>"rw"</code>.
* @exception IOException if an I/O error occurs.
* @exception SecurityException if a security manager exists, its
* <code>checkRead</code> method is called with the name
* argument to see if the application is allowed read access
* to the file. If the mode argument is equal to
* <code>"rw"</code>, its <code>checkWrite</code> method also
* is called with the name argument to see if the application
* is allowed write access to the file. Either of these may
* result in a security exception.
* @see java.lang.SecurityException
* @see java.lang.SecurityManager#checkRead(java.lang.String)
* @since JDK1.0
*/
public RandomAccessFile(String name, String mode) throws IOException {
boolean rw = mode.equals("rw");
if (!rw && !mode.equals("r"))
throw new IllegalArgumentException("mode must be r or rw");
SecurityManager security = System.getSecurityManager();
if (security != null) {
security.checkRead(name);
if (rw) {
security.checkWrite(name);
}
}
fd = new FileDescriptor();
open(name, rw);
}
/**
* Creates a random access file stream to read from, and optionally
* to write to, the file specified by the <code>File</code> argument.
* <p>
* The mode argument must either be equal to <code>"r"</code> or to
* <code>"rw"</code>, indicating either to open the file for input,
* or for both input and output, respectively.
*
* @param file the file object.
* @param mode the access mode.
* @exception IllegalArgumentException if the mode argument is not equal
* to <code>"r"</code> or to <code>"rw"</code>.
* @exception IOException if an I/O error occurs.
* @exception SecurityException if a security manager exists, its
* <code>checkRead</code> method is called with the pathname
* of the <code>File</code> argument to see if the
* application is allowed read access to the file. If the
* mode argument is equal to <code>"rw"</code>, its
* <code>checkWrite</code> method also is called with the
* pathname to see if the application is allowed write access
* to the file.
* @see java.io.File#getPath()
* @see java.lang.SecurityManager#checkRead(java.lang.String)
* @since JDK1.0
*/
public RandomAccessFile(File file, String mode) throws IOException {
this(file.getPath(), mode);
}
/**
* Returns the opaque file descriptor object associated with this stream.
*
* @return the file descriptor object associated with this stream.
* @exception IOException if an I/O error occurs.
* @see java.io.FileDescriptor
* @since JDK1.0
*/
public final FileDescriptor getFD() throws IOException {
if (fd != null) return fd;
throw new IOException();
}
/**
* Opens a file and returns the file descriptor. The file is
* opened in read-write mode if writeable is true, else
* the file is opened as read-only.
* @param name the name of the file
* @param writeable the boolean indicating whether file is
* writeable or not.
*/
private native void open(String name, boolean writeable) throws IOException;
// 'Read' primitives
/**
* Reads a byte of data from this file. This method blocks if no
* input is yet available.
*
* @return the next byte of data, or <code>-1</code> if the end of the
* file is reached.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public native int read() throws IOException;
/**
* Reads a sub array as a sequence of bytes.
* @param b the data to be written
* @param off the start offset in the data
* @param len the number of bytes that are written
* @exception IOException If an I/O error has occurred.
*/
private native int readBytes(byte b[], int off, int len) throws IOException;
/**
* Reads up to <code>len</code> bytes of data from this file into an
* array of bytes. This method blocks until at least one byte of input
* is available.
*
* @param b the buffer into which the data is read.
* @param off the start offset of the data.
* @param len the maximum number of bytes read.
* @return the total number of bytes read into the buffer, or
* <code>-1</code> if there is no more data because the end of
* the file has been reached.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public int read(byte b[], int off, int len) throws IOException {
return readBytes(b, off, len);
}
/**
* Reads up to <code>b.length</code> bytes of data from this file
* into an array of bytes. This method blocks until at least one byte
* of input is available.
*
* @param b the buffer into which the data is read.
* @return the total number of bytes read into the buffer, or
* <code>-1</code> if there is no more data because the end of
* this file has been reached.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public int read(byte b[]) throws IOException {
return readBytes(b, 0, b.length);
}
/**
* Reads <code>b.length</code> bytes from this file into the byte
* array. This method reads repeatedly from the file until all the
* bytes are read. This method blocks until all the bytes are read,
* the end of the stream is detected, or an exception is thrown.
*
* @param b the buffer into which the data is read.
* @exception EOFException if this file reaches the end before reading
* all the bytes.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final void readFully(byte b[]) throws IOException {
readFully(b, 0, b.length);
}
/**
* Reads exactly <code>len</code> bytes from this file into the byte
* array. This method reads repeatedly from the file until all the
* bytes are read. This method blocks until all the bytes are read,
* the end of the stream is detected, or an exception is thrown.
*
* @param b the buffer into which the data is read.
* @param off the start offset of the data.
* @param len the number of bytes to read.
* @exception EOFException if this file reaches the end before reading
* all the bytes.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final void readFully(byte b[], int off, int len) throws IOException {
int n = 0;
while (n < len) {
int count = this.read(b, off + n, len - n);
if (count < 0)
throw new EOFException();
n += count;
}
}
/**
* Skips exactly <code>n</code> bytes of input.
* <p>
* This method blocks until all the bytes are skipped, the end of
* the stream is detected, or an exception is thrown.
*
* @param n the number of bytes to be skipped.
* @return the number of bytes skipped, which is always <code>n</code>.
* @exception EOFException if this file reaches the end before skipping
* all the bytes.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public int skipBytes(int n) throws IOException {
seek(getFilePointer() + n);
return n;
}
// 'Write' primitives
/**
* Writes the specified byte to this file.
*
* @param b the <code>byte</code> to be written.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public native void write(int b) throws IOException;
/**
* Writes a sub array as a sequence of bytes.
* @param b the data to be written
* @param off the start offset in the data
* @param len the number of bytes that are written
* @exception IOException If an I/O error has occurred.
*/
private native void writeBytes(byte b[], int off, int len) throws IOException;
/**
* Writes <code>b.length</code> bytes from the specified byte array
* starting at offset <code>off</code> to this file.
*
* @param b the data.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public void write(byte b[]) throws IOException {
writeBytes(b, 0, b.length);
}
/**
* Writes <code>len</code> bytes from the specified byte array
* starting at offset <code>off</code> to this file.
*
* @param b the data.
* @param off the start offset in the data.
* @param len the number of bytes to write.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public void write(byte b[], int off, int len) throws IOException {
writeBytes(b, off, len);
}
// 'Random access' stuff
/**
* Returns the current offset in this file.
*
* @return the offset from the beginning of the file, in bytes,
* at which the next read or write occurs.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public native long getFilePointer() throws IOException;
/**
* Sets the file-pointer offset, measured from the beginning of this
* file, at which the next read or write occurs. The offset may be
* set beyond the end of the file. Setting the offset beyond the end
* of the file does not change the file length. The file length will
* change only by writing after the offset has been set beyond the end
* of the file.
*
* @param pos the offset position, measured in bytes from the
* beginning of the file, at which to set the file
* pointer.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public native void seek(long pos) throws IOException;
/**
* Returns the length of this file.
*
* @return the length of this file.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public native long length() throws IOException;
/**
* Closes this random access file stream and releases any system
* resources associated with the stream.
*
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public native void close() throws IOException;
//
// Some "reading/writing Java data types" methods stolen from
// DataInputStream and DataOutputStream.
//
/**
* Reads a <code>boolean</code> from this file. This method reads a
* single byte from the file. A value of <code>0</code> represents
* <code>false</code>. Any other value represents <code>true</code>.
* This method blocks until the byte is read, the end of the stream
* is detected, or an exception is thrown.
*
* @return the <code>boolean</code> value read.
* @exception EOFException if this file has reached the end.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final boolean readBoolean() throws IOException {
int ch = this.read();
if (ch < 0)
throw new EOFException();
return (ch != 0);
}
/**
* Reads a signed 8-bit value from this file. This method reads a
* byte from the file. If the byte read is <code>b</code>, where
* <code>0 <= b <= 255</code>,
* then the result is:
* <ul><code>
* (byte)(b)
*</code></ul>
* <p>
* This method blocks until the byte is read, the end of the stream
* is detected, or an exception is thrown.
*
* @return the next byte of this file as a signed 8-bit
* <code>byte</code>.
* @exception EOFException if this file has reached the end.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final byte readByte() throws IOException {
int ch = this.read();
if (ch < 0)
throw new EOFException();
return (byte)(ch);
}
/**
* Reads an unsigned 8-bit number from this file. This method reads
* a byte from this file and returns that byte.
* <p>
* This method blocks until the byte is read, the end of the stream
* is detected, or an exception is thrown.
*
* @return the next byte of this file, interpreted as an unsigned
* 8-bit number.
* @exception EOFException if this file has reached the end.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final int readUnsignedByte() throws IOException {
int ch = this.read();
if (ch < 0)
throw new EOFException();
return ch;
}
/**
* Reads a signed 16-bit number from this file. The method reads 2
* bytes from this file. If the two bytes read, in order, are
* <code>b1</code> and <code>b2</code>, where each of the two values is
* between <code>0</code> and <code>255</code>, inclusive, then the
* result is equal to:
* <ul><code>
* (short)((b1 << 8) | b2)
* </code></ul>
* <p>
* This method blocks until the two bytes are read, the end of the
* stream is detected, or an exception is thrown.
*
* @return the next two bytes of this file, interpreted as a signed
* 16-bit number.
* @exception EOFException if this file reaches the end before reading
* two bytes.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final short readShort() throws IOException {
int ch1 = this.read();
int ch2 = this.read();
if ((ch1 | ch2) < 0)
throw new EOFException();
return (short)((ch1 << 8) + (ch2 << 0));
}
/**
* Reads an unsigned 16-bit number from this file. This method reads
* two bytes from the file. If the bytes read, in order, are
* <code>b1</code> and <code>b2</code>, where
* <code>0 <= b1, b2 <= 255</code>,
* then the result is equal to:
* <ul><code>
* (b1 << 8) | b2
* </code></ul>
* <p>
* This method blocks until the two bytes are read, the end of the
* stream is detected, or an exception is thrown.
*
* @return the next two bytes of this file, interpreted as an unsigned
* 16-bit integer.
* @exception EOFException if this file reaches the end before reading
* two bytes.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final int readUnsignedShort() throws IOException {
int ch1 = this.read();
int ch2 = this.read();
if ((ch1 | ch2) < 0)
throw new EOFException();
return (ch1 << 8) + (ch2 << 0);
}
/**
* Reads a Unicode character from this file. This method reads two
* bytes from the file. If the bytes read, in order, are
* <code>b1</code> and <code>b2</code>, where
* <code>0 <= b1, b2 <= 255</code>,
* then the result is equal to:
* <ul><code>
* (char)((b1 << 8) | b2)
* </code></ul>
* <p>
* This method blocks until the two bytes are read, the end of the
* stream is detected, or an exception is thrown.
*
* @return the next two bytes of this file as a Unicode character.
* @exception EOFException if this file reaches the end before reading
* two bytes.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final char readChar() throws IOException {
int ch1 = this.read();
int ch2 = this.read();
if ((ch1 | ch2) < 0)
throw new EOFException();
return (char)((ch1 << 8) + (ch2 << 0));
}
/**
* Reads a signed 32-bit integer from this file. This method reads 4
* bytes from the file. If the bytes read, in order, are <code>b1</code>,
* <code>b2</code>, <code>b3</code>, and <code>b4</code>, where
* <code>0 <= b1, b2, b3, b4 <= 255</code>,
* then the result is equal to:
* <ul><code>
* (b1 << 24) | (b2 << 16) + (b3 << 8) + b4
* </code></ul>
* <p>
* This method blocks until the four bytes are read, the end of the
* stream is detected, or an exception is thrown.
*
* @return the next four bytes of this file, interpreted as an
* <code>int</code>.
* @exception EOFException if this file reaches the end before reading
* four bytes.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final int readInt() throws IOException {
int ch1 = this.read();
int ch2 = this.read();
int ch3 = this.read();
int ch4 = this.read();
if ((ch1 | ch2 | ch3 | ch4) < 0)
throw new EOFException();
return ((ch1 << 24) + (ch2 << 16) + (ch3 << 8) + (ch4 << 0));
}
/**
* Reads a signed 64-bit integer from this file. This method reads eight
* bytes from the file. If the bytes read, in order, are
* <code>b1</code>, <code>b2</code>, <code>b3</code>,
* <code>b4</code>, <code>b5</code>, <code>b6</code>,
* <code>b7</code>, and <code>b8,</code> where:
* <ul><code>
* 0 <= b1, b2, b3, b4, b5, b6, b7, b8 <=255,
* </code></ul>
* <p>
* then the result is equal to:
* <p><blockquote><pre>
* ((long)b1 << 56) + ((long)b2 << 48)
* + ((long)b3 << 40) + ((long)b4 << 32)
* + ((long)b5 << 24) + ((long)b6 << 16)
* + ((long)b7 << 8) + b8
* </pre></blockquote>
* <p>
* This method blocks until the eight bytes are read, the end of the
* stream is detected, or an exception is thrown.
*
* @return the next eight bytes of this file, interpreted as a
* <code>long</code>.
* @exception EOFException if this file reaches the end before reading
* eight bytes.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final long readLong() throws IOException {
return ((long)(readInt()) << 32) + (readInt() & 0xFFFFFFFFL);
}
/**
* Reads a <code>float</code> from this file. This method reads an
* <code>int</code> value as if by the <code>readInt</code> method
* and then converts that <code>int</code> to a <code>float</code>
* using the <code>intBitsToFloat</code> method in class
* <code>Float</code>.
* <p>
* This method blocks until the four bytes are read, the end of the
* stream is detected, or an exception is thrown.
*
* @return the next four bytes of this file, interpreted as a
* <code>float</code>.
* @exception EOFException if this file reaches the end before reading
* four bytes.
* @exception IOException if an I/O error occurs.
* @see java.io.RandomAccessFile#readInt()
* @see java.lang.Float#intBitsToFloat(int)
* @since JDK1.0
*/
public final float readFloat() throws IOException {
return Float.intBitsToFloat(readInt());
}
/**
* Reads a <code>double</code> from this file. This method reads a
* <code>long</code> value as if by the <code>readLong</code> method
* and then converts that <code>long</code> to a <code>double</code>
* using the <code>longBitsToDouble</code> method in
* class <code>Double</code>.
* <p>
* This method blocks until the eight bytes are read, the end of the
* stream is detected, or an exception is thrown.
*
* @return the next eight bytes of this file, interpreted as a
* <code>double</code>.
* @exception EOFException if this file reaches the end before reading
* eight bytes.
* @exception IOException if an I/O error occurs.
* @see java.io.RandomAccessFile#readLong()
* @see java.lang.Double#longBitsToDouble(long)
* @since JDK1.0
*/
public final double readDouble() throws IOException {
return Double.longBitsToDouble(readLong());
}
/**
* Reads the next line of text from this file. This method
* successively reads bytes from the file until it reaches the end of
* a line of text.
* <p>
* A line of text is terminated by a carriage-return character
* (<code>'\r'</code>), a newline character (<code>'\n'</code>), a
* carriage-return character immediately followed by a newline
* character, or the end of the input stream. The line-terminating
* character(s), if any, are included as part of the string returned.
* <p>
* This method blocks until a newline character is read, a carriage
* return and the byte following it are read (to see if it is a
* newline), the end of the stream is detected, or an exception is thrown.
*
* @return the next line of text from this file.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final String readLine() throws IOException {
StringBuffer input = new StringBuffer();
int c;
while (((c = read()) != -1) && (c != '\n')) {
input.append((char)c);
}
if ((c == -1) && (input.length() == 0)) {
return null;
}
return input.toString();
}
/**
* Reads in a string from this file. The string has been encoded
* using a modified UTF-8 format.
* <p>
* The first two bytes are read as if by
* <code>readUnsignedShort</code>. This value gives the number of
* following bytes that are in the encoded string, not
* the length of the resulting string. The following bytes are then
* interpreted as bytes encoding characters in the UTF-8 format
* and are converted into characters.
* <p>
* This method blocks until all the bytes are read, the end of the
* stream is detected, or an exception is thrown.
*
* @return a Unicode string.
* @exception EOFException if this file reaches the end before
* reading all the bytes.
* @exception IOException if an I/O error occurs.
* @exception UTFDataFormatException if the bytes do not represent
* valid UTF-8 encoding of a Unicode string.
* @see java.io.RandomAccessFile#readUnsignedShort()
* @since JDK1.0
*/
public final String readUTF() throws IOException {
return DataInputStream.readUTF(this);
}
/**
* Writes a <code>boolean</code> to the file as a 1-byte value. The
* value <code>true</code> is written out as the value
* <code>(byte)1</code>; the value <code>false</code> is written out
* as the value <code>(byte)0</code>.
*
* @param v a <code>boolean</code> value to be written.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final void writeBoolean(boolean v) throws IOException {
write(v ? 1 : 0);
//written++;
}
/**
* Writes a <code>byte</code> to the file as a 1-byte value.
*
* @param v a <code>byte</code> value to be written.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final void writeByte(int v) throws IOException {
write(v);
//written++;
}
/**
* Writes a <code>short</code> to the file as two bytes, high byte first.
*
* @param v a <code>short</code> to be written.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final void writeShort(int v) throws IOException {
write((v >>> 8) & 0xFF);
write((v >>> 0) & 0xFF);
//written += 2;
}
/**
* Writes a <code>char</code> to the file as a 2-byte value, high
* byte first.
*
* @param v a <code>char</code> value to be written.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final void writeChar(int v) throws IOException {
write((v >>> 8) & 0xFF);
write((v >>> 0) & 0xFF);
//written += 2;
}
/**
* Writes an <code>int</code> to the file as four bytes, high byte first.
*
* @param v an <code>int</code> to be written.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final void writeInt(int v) throws IOException {
write((v >>> 24) & 0xFF);
write((v >>> 16) & 0xFF);
write((v >>> 8) & 0xFF);
write((v >>> 0) & 0xFF);
//written += 4;
}
/**
* Writes a <code>long</code> to the file as eight bytes, high byte first.
*
* @param v a <code>long</code> to be written.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final void writeLong(long v) throws IOException {
write((int)(v >>> 56) & 0xFF);
write((int)(v >>> 48) & 0xFF);
write((int)(v >>> 40) & 0xFF);
write((int)(v >>> 32) & 0xFF);
write((int)(v >>> 24) & 0xFF);
write((int)(v >>> 16) & 0xFF);
write((int)(v >>> 8) & 0xFF);
write((int)(v >>> 0) & 0xFF);
//written += 8;
}
/**
* Converts the float argument to an <code>int</code> using the
* <code>floatToIntBits</code> method in class <code>Float</code>,
* and then writes that <code>int</code> value to the file as a
* 4-byte quantity, high byte first.
*
* @param v a <code>float</code> value to be written.
* @exception IOException if an I/O error occurs.
* @see java.lang.Float#floatToIntBits(float)
* @since JDK1.0
*/
public final void writeFloat(float v) throws IOException {
writeInt(Float.floatToIntBits(v));
}
/**
* Converts the double argument to a <code>long</code> using the
* <code>doubleToLongBits</code> method in class <code>Double</code>,
* and then writes that <code>long</code> value to the file as an
* 8-byte quantity, high byte first.
*
* @param v a <code>double</code> value to be written.
* @exception IOException if an I/O error occurs.
* @see java.lang.Double#doubleToLongBits(double)
* @since JDK1.0
*/
public final void writeDouble(double v) throws IOException {
writeLong(Double.doubleToLongBits(v));
}
/**
* Writes the string to the file as a sequence of bytes. Each
* character in the string is written out, in sequence, by discarding
* its high eight bits.
*
* @param s a string of bytes to be written.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final void writeBytes(String s) throws IOException {
int len = s.length();
byte[] b = new byte[len];
s.getBytes(0, len, b, 0);
writeBytes(b, 0, len);
}
/**
* Writes a string to the file as a sequence of characters. Each
* character is written to the data output stream as if by the
* <code>writeChar</code> method.
*
* @param s a <code>String</code> value to be written.
* @exception IOException if an I/O error occurs.
* @see java.io.RandomAccessFile#writeChar(int)
* @since JDK1.0
*/
public final void writeChars(String s) throws IOException {
int clen = s.length();
int blen = 2*clen;
byte[] b = new byte[blen];
char[] c = new char[clen];
s.getChars(0, clen, c, 0);
for (int i = 0, j = 0; i < clen; i++) {
b[j++] = (byte)(c[i] >>> 8);
b[j++] = (byte)(c[i] >>> 0);
}
writeBytes(b, 0, blen);
}
/**
* Writes a string to the file using UTF-8 encoding in a
* machine-independent manner.
* <p>
* First, two bytes are written to the file as if by the
* <code>writeShort</code> method giving the number of bytes to
* follow. This value is the number of bytes actually written out,
* not the length of the string. Following the length, each character
* of the string is output, in sequence, using the UTF-8 encoding
* for each character.
*
* @param str a string to be written.
* @exception IOException if an I/O error occurs.
* @since JDK1.0
*/
public final void writeUTF(String str) throws IOException {
int strlen = str.length();
int utflen = 0;
for (int i = 0 ; i < strlen ; i++) {
int c = str.charAt(i);
if ((c >= 0x0001) && (c <= 0x007F)) {
utflen++;
} else if (c > 0x07FF) {
utflen += 3;
} else {
utflen += 2;
}
}
if (utflen > 65535)
throw new UTFDataFormatException();
write((utflen >>> 8) & 0xFF);
write((utflen >>> 0) & 0xFF);
for (int i = 0 ; i < strlen ; i++) {
int c = str.charAt(i);
if ((c >= 0x0001) && (c <= 0x007F)) {
write(c);
} else if (c > 0x07FF) {
write(0xE0 | ((c >> 12) & 0x0F));
write(0x80 | ((c >> 6) & 0x3F));
write(0x80 | ((c >> 0) & 0x3F));
//written += 2;
} else {
write(0xC0 | ((c >> 6) & 0x1F));
write(0x80 | ((c >> 0) & 0x3F));
//written += 1;
}
}
//written += strlen + 2;
}
}
⏎ java/io/RandomAccessFile.java
Or download all of them as a single archive file:
File name: jdk-1.1.8-src.zip File size: 1574187 bytes Release date: 2018-11-16 Download
⇒ Backup JDK 1.1 Installation Directory
2018-11-17, 177025👍, 0💬
Related Topics:
