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Java java.awt Class Dimension（JDK8）

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Java™ Platform
Standard Ed. 8
java.awt

Class Dimension

  • All Implemented Interfaces:
    Serializable, Cloneable
    Direct Known Subclasses:
    DimensionUIResource 

    public class Dimension
extends Dimension2D
implements Serializable
    The Dimension class encapsulates the width and height of a component (in integer precision) in a single object. The class is associated with certain properties of components. Several methods defined by the Component class and the LayoutManager interface return a Dimension object.

    Normally the values of width and height are non-negative integers. The constructors that allow you to create a dimension do not prevent you from setting a negative value for these properties. If the value of width or height is negative, the behavior of some methods defined by other objects is undefined.

    Since:
    1.0
    See Also:
    Component, LayoutManager, Serialized Form

    • Field Summary

      Fields 
      Modifier and Type Field and Description
      int height
      The height dimension; negative values can be used.
      int width
      The width dimension; negative values can be used.

    • Constructor Summary

      Constructors 
      Constructor and Description
      Dimension()
      Creates an instance of Dimension with a width of zero and a height of zero.
      Dimension(Dimension d)
      Creates an instance of Dimension whose width and height are the same as for the specified dimension.
      Dimension(int width, int height)
      Constructs a Dimension and initializes it to the specified width and specified height.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method and Description
      boolean equals(Object obj)
      Checks whether two dimension objects have equal values.
      double getHeight()
      Returns the height of this Dimension in double precision.
      Dimension getSize()
      Gets the size of this Dimension object.
      double getWidth()
      Returns the width of this Dimension in double precision.
      int hashCode()
      Returns the hash code for this Dimension.
      void setSize(Dimension d)
      Sets the size of this Dimension object to the specified size.
      void setSize(double width, double height)
      Sets the size of this Dimension object to the specified width and height in double precision.
      void setSize(int width, int height)
      Sets the size of this Dimension object to the specified width and height.
      String toString()
      Returns a string representation of the values of this Dimension object's height and width fields.

    • Constructor Detail

      • Dimension

        public Dimension()
        Creates an instance of Dimension with a width of zero and a height of zero.

      • Dimension

        public Dimension(Dimension d)
        Creates an instance of Dimension whose width and height are the same as for the specified dimension.
        Parameters:
        d - the specified dimension for the width and height values

      • Dimension

        public Dimension(int width,
                 int height)
        Constructs a Dimension and initializes it to the specified width and specified height.
        Parameters:
        width - the specified width
        height - the specified height

    • Method Detail

      • getWidth

        public double getWidth()
        Returns the width of this Dimension in double precision.
        Specified by:
        getWidth in class Dimension2D
        Returns:
        the width of this Dimension.
        Since:
        1.2

      • getHeight

        public double getHeight()
        Returns the height of this Dimension in double precision.
        Specified by:
        getHeight in class Dimension2D
        Returns:
        the height of this Dimension.
        Since:
        1.2

      • setSize

        public void setSize(double width,
                    double height)
        Sets the size of this Dimension object to the specified width and height in double precision. Note that if width or height are larger than Integer.MAX_VALUE, they will be reset to Integer.MAX_VALUE.
        Specified by:
        setSize in class Dimension2D
        Parameters:
        width - the new width for the Dimension object
        height - the new height for the Dimension object
        Since:
        1.2

      • getSize

        public Dimension getSize()
        Gets the size of this Dimension object. This method is included for completeness, to parallel the getSize method defined by Component.
        Returns:
        the size of this dimension, a new instance of Dimension with the same width and height
        Since:
        1.1
        See Also:
        setSize(double, double), Component.getSize()

      • setSize

        public void setSize(Dimension d)
        Sets the size of this Dimension object to the specified size. This method is included for completeness, to parallel the setSize method defined by Component.
        Parameters:
        d - the new size for this Dimension object
        Since:
        1.1
        See Also:
        getSize(), Component.setSize(int, int)

      • setSize

        public void setSize(int width,
                    int height)
        Sets the size of this Dimension object to the specified width and height. This method is included for completeness, to parallel the setSize method defined by Component.
        Parameters:
        width - the new width for this Dimension object
        height - the new height for this Dimension object
        Since:
        1.1
        See Also:
        getSize(), Component.setSize(int, int)

      • equals

        public boolean equals(Object obj)
        Checks whether two dimension objects have equal values.
        Overrides:
        equals in class Object
        Parameters:
        obj - the reference object with which to compare.
        Returns:
        true if this object is the same as the obj argument; false otherwise.
        See Also:
        Object.hashCode(), HashMap

      • toString

        public String toString()
        Returns a string representation of the values of this Dimension object's height and width fields. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be null.
        Overrides:
        toString in class Object
        Returns:
        a string representation of this Dimension object
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Java™ Platform
Standard Ed. 8

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