Programming Wireless Devices with the Java2 Platform

5.4 New for CLDC 1.1

The following list summarizes the Java library changes between CLDC Specification versions 1.0 and 1.1. For details, refer to "CLDC Almanac" on page 359.

• Classes Float and Double have been added.

• The following methods have been added to other library classes to handle floating point values:

  • java.lang.Integer.doubleValue()

  • java.lang.Integer.floatValue()

  • java.lang.Long.doubleValue()

  • java.lang.Long.floatValue()

  • java.lang.Math.abs(double a)

  • java.lang.Math.abs(float a)

  • java.lang.Math.max(double a, double b)

  • java.lang.Math.max(float a, float b)

  • java.lang.Math.min(double a, double b)

  • java.lang.Math.min(float a, float b)

  • java.lang.Math.ceil(double a)

  • java.lang.Math.floor(double a)

  • java.lang.Math.sin(double a)

  • java.lang.Math.cos(double a)

  • java.lang.Math.tan(double a)

  • java.lang.Math.sqrt(double a)

  • java.lang.Math.toDegrees(double angrad)

  • java.lang.Math.toRadians(double angrad)

  • java.lang.String.valueOf(double d)

  • java.lang.String.valueOf(float f)

  • java.lang.StringBuffer.append(double d)

  • java.lang.StringBuffer.append(float f)

  • java.lang.StringBuffer.insert(int offset, double d)

  • java.lang.StringBuffer.insert(int offset, float f)

  • java.io.DataInput.readDouble()

  • java.io.DataInput.readFloat()

  • java.io.DataInputStream.readDouble()

  • java.io.DataInputStream.readFloat()

  • java.io.DataOutput.writeDouble(double v)

  • java.io.DataOutput.writeFloat(float v)

  • java.io.DataOutputStream.writeDouble(double v)

  • java.io.DataOutputStream.writeFloat(float f)

  • java.io.PrintStream.print(double d)

  • java.io.PrintStream.print(float f)

  • java.io.PrintStream.println(double d)

  • java.io.PrintStream.println(float f)

  • java.util.Random.nextDouble()

  • java.util.Random.nextFloat()

• The following fields have been added to support floating point calculations:

  • java.lang.Math.E

  • java.lang.Math.PI

• Classes java.lang.ref.Reference and java.lang.ref.WeakReference have been added.

• Classes java.util.Calendar, java.util.Date and java.util.TimeZone have been redesigned to be more J2SE-compliant by adding a number of fields and methods.

• One new error class, NoClassDefFoundError, has been added.

• Class Thread has the following new methods and constructors:

  • Thread.getName()

  • Thread.interrupt()

  • Thread(Runnable Target, String name)

  • Thread(String name)

• In addition, the following fields and methods have been added:

  • java.lang.Boolean.TRUE and java.lang.Boolean.FALSE

  • java.lang.String.intern()

  • java.lang.String.equalsIgnoreCase()

  • java.util.Date.toString()

  • java.util.Random.nextInt(int n)