1234567.123, -1234567.123);
}
}
The output is shown here:
Here are some numeric values in different formats.
Various integer formats: 3 (3) +3 00003
Default floating-point format: 1234567.123000
Floating-point with commas: 1,234,567.123000
Negative floating-point default: -1,234,567.123000
Negative floating-point option: (1,234,567.123000)
Line up positive and negative values:
1,234,567.12
-1,234,567.12
PrintStream also defines the format( ) method. It has these general forms:
PrintStream format(String fmtString, Object ... args)
PrintStream format(Locale loc, String fmtString, Object ... args)
It works exactly like printf( ).
DataOutputStream and DataInputStream
DataOutputStream and DataInputStream enable you to write or read primitive data to or
from a stream. They implement the DataOutput and DataInput interfaces, respectively.
These interfaces define methods that convert primitive values to or from a sequence of
bytes. These streams make it easy to store binary data, such as integers or floating-point
values, in a file. Each is examined here.
DataOutputStream extends FilterOutputStream, which extends OutputStream.
DataOutputStream defines the following constructor:
DataOutputStream(OutputStream outputStream)
Here, outputStream specifies the output stream to which data will be written.
DataOutputStream supports all of the methods defined by it superclasses. However,
it is the methods defined by the DataOutput interface, which it implements, that make it
interesting. DataOutput defines methods that convert values of a primitive type into a byte
sequence and then writes it to the underlying stream. Here is a sampling of these methods:
final void writeDouble(double value) throws IOException
final void writeBoolean(boolean value) throws IOException
final void writeInt(int value) throws IOException
Here, value is the value written to the stream.
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