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Java利用弹簧控制组件大小
Java利用弹簧控制组件大小:
package
com.han;
import
java.awt.Container;
import
javax.swing.JButton;
import
javax.swing.JFrame;
import
javax.swing.Spring;
import
javax.swing.SpringLayout;
import
javax.swing.SpringLayout.Constraints;
// Constraints为SpringLayout的内部类
/**
* 利用弹簧控制组件大小
* @author HAN
*
*/
public
class
SpringLayout_2
extends
JFrame {
/**
*
*/
private
static
final
long
serialVersionUID = -5240773865528158419L;
public
SpringLayout_2() {
// TODO Auto-generated constructor stub
Container container = getContentPane();
SpringLayout springLayout =
new
SpringLayout();
container.setLayout(springLayout);
JButton buttonL =
new
JButton(
"buttonL"
);
JButton buttonR =
new
JButton(
"buttonR"
);
container.add(buttonL);
container.add(buttonR);
Spring vST = Spring.constant(
5
);
Spring hSP = Spring.constant(
10
,
60
,
100
);
springLayout.putConstraint(SpringLayout.NORTH, buttonR,
0
,
SpringLayout.NORTH, buttonL);
springLayout.putConstraint(SpringLayout.NORTH, buttonL, vST,
SpringLayout.NORTH, container);
springLayout.putConstraint(SpringLayout.WEST, buttonL, hSP,
SpringLayout.WEST, container);
springLayout.putConstraint(SpringLayout.EAST, container, hSP,
SpringLayout.EAST, buttonR);
springLayout.putConstraint(SpringLayout.WEST, buttonR, Spring.scale(hSP,
2
),
SpringLayout.EAST, buttonL);
Spring heightST = Spring.constant(
60
);
Spring widthSP = Spring.constant(
60
,
300
,
600
);
Constraints buttonLConstraints = springLayout.getConstraints(buttonL);
buttonLConstraints.setHeight(heightST);
buttonLConstraints.setWidth(widthSP);
Constraints buttonRConstraints = springLayout.getConstraints(buttonR);
buttonRConstraints.setHeight(heightST);
buttonRConstraints.setWidth(widthSP);
}
/**
* @param args
*/
public
static
void
main(String[] args) {
// TODO Auto-generated method stub
SpringLayout_2 frame =
new
SpringLayout_2();
frame.setTitle(
"利用弹簧控制组件大小"
);
frame.setVisible(
true
);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setBounds(
100
,
100
,
600
,
300
);
}
}
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