Class DataInputStream

vm/JavaAPI/src/java/io/DataInputStream.java:29–280

A data input stream lets an application read primitive Java data types from an underlying input stream in a machine-independent way. An application uses a data output stream to write data that can later be read by a data input stream. Since: JDK1.0, CLDC 1.0 See Also:DataOutputStream

 * Since: JDK1.0, CLDC 1.0 See Also:DataOutputStream
 */
public class DataInputStream extends FilterInputStream implements java.io.DataInput{
    private final byte[] scratch = new byte[8];

    /**
     * Creates a DataInputStream and saves its argument, the input stream in, for later use.
     * in - the input stream.
     */
    public DataInputStream(java.io.InputStream in){
         super(in);
    }

    /**
     * See the general contract of the readBoolean method of DataInput.
     * Bytes for this operation are read from the contained input stream.
     */
    public final boolean readBoolean() throws java.io.IOException{
        int temp = in.read();
        if (temp < 0) {
            throw new EOFException();
        }
        return temp != 0;
    }

    /**
     * See the general contract of the readByte method of DataInput.
     * Bytes for this operation are read from the contained input stream.
     */
    public final byte readByte() throws java.io.IOException{
        int temp = in.read();
        if (temp < 0) {
            throw new EOFException();
        }
        return (byte) temp;
    }

    /**
     * See the general contract of the readChar method of DataInput.
     * Bytes for this operation are read from the contained input stream.
     */
    public final char readChar() throws java.io.IOException{
        return (char) readShort();
    }

    /**
     * See the general contract of the readDouble method of DataInput.
     * Bytes for this operation are read from the contained input stream.
     */
    public final double readDouble() throws java.io.IOException{
        return Double.longBitsToDouble(readLong());
    }

    /**
     * See the general contract of the readFloat method of DataInput.
     * Bytes for this operation are read from the contained input stream.
     */
    public final float readFloat() throws java.io.IOException{
        return Float.intBitsToFloat(readInt());
    }