FlowLayout

Name

Description

The FlowLayout LayoutManager provides the means to lay out components in a row by row fashion. As each row fills up, the components continue on the next row.

Class Definition

public class java.awt.FlowLayout extends java.lang.Object implements java.awt.LayoutManager, java.io.Serializable {
 // Constants public static final int CENTER;
public static final int LEFT;
public static final int RIGHT; // Constructors public FlowLayout();
public FlowLayout (int alignment);
public FlowLayout (int alignment, int hgap, int vgap); // Instance Methods public void addLayoutComponent (String name, Component component);
public int getAlignment(); public int getHgap(); public int getVgap(); public void layoutContainer (Container target);
public Dimension minimumLayoutSize (Container target);
public Dimension preferredLayoutSize (Container target);
public void removeLayoutComponent (Component component);
public void setAlignment (int align); public void setHgap (int hgap); public void setVgap (int vgap); public String toString();
}

Constants

CENTER

public static final int CENTER

The default alignment for a FlowLayout object; rows of components are centered within the container.

LEFT

public static final int LEFT

An alignment for a FlowLayout object; rows of components start on the left side of the container.

RIGHT

public static final int RIGHT

An alignment for a FlowLayout object; rows of components start on the right side of the container.

Constructors

FlowLayout

public FlowLayout()

• Description
• Constructs a FlowLayout object with CENTER alignment.

public FlowLayout (int alignment)

• Parameters
• • alignment
  • Alignment of components within the container.
• Description
• Constructs a FlowLayout object with the given alignment.

public FlowLayout (int alignment, int hgap, int vgap)

• Parameters
• • alignment
  • Alignment of components within container
  • hgap
  • Horizontal space between each component in a row
  • vgap
  • Vertical space between each row
• Description
• Constructs a FlowLayout object with the given alignment and the values specified as the gaps between each component in the container managed by this instance of FlowLayout.

Instance Methods

addLayoutComponent

public void addLayoutComponent (String name, Component component)

• Parameters
• • name
  • Name of component to add.
  • component
  • Actual component being added.
• Implements
• LayoutManager.addLayoutComponent()
• Description
• Does nothing.

getAlignment

public int getAlignment()

• Returns
• The alignment constant for this FlowLayout.

getHgap

public int getHgap()

• Returns
• The horizontal gap between components.

getVgap

public int getVgap()

• Returns
• The vertical gap between components.

layoutContainer

public void layoutContainer (Container target)

• Parameters
• • target
  • The container that needs to be redrawn.
• Implements
• LayoutManager.layoutContainer()
• Description
• Draws the components contained within the target container.

minimumLayoutSize

public Dimension minimumLayoutSize (Container target)

• Parameters
• • target
  • The container whose size needs to be calculated.
• Returns
• Minimum Dimension of container target
• Implements
• LayoutManager.minimumLayoutSize()
• Description
• Calculates minimum size of target container.

preferredLayoutSize

public Dimension preferredLayoutSize (Container target)

• Parameters
• • target
  • The container whose size needs to be calculated.
• Returns
• Preferred Dimension of container target
• Implements
• LayoutManager.preferredLayoutSize()
• Description
• Calculates preferred size of target container.

removeLayoutComponent

public void removeLayoutComponent (Component component)

• Parameters
• • component
  • Component to stop tracking.
• Implements
• LayoutManager.removeLayoutComponent()
• Description
• Does nothing.

setAlignment

public void setAlignment(int align)

• Parameters
• • alignment
  • Alignment of components within container
• Description
• Sets the alignment for the FlowLayout.

setHgap

public void setHgap(int hgap)

• Parameters
• • hgap
  • The horizontal gap value.
• Description
• Sets the horizontal gap between components.

setVgap

public void setVgap(int vgap)

• Parameters
• • vgap
  • The vertical gap value.
• Description
• Sets the vertical gap between components.

toString

public String toString()

• Returns
• A string representation of the FlowLayout object.
• Overrides
• Object.toString()

See Also

Component, Container, Dimension, LayoutManager, Object, Serializable, String