FULL PRODUCT VERSION :
java version "1.7.0_04-ea"
Java(TM) SE Runtime Environment (build 1.7.0_04-ea-b13)
Java HotSpot(TM) 64-Bit Server VM (build 23.0-b16, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
MacOS X 10.7.3 (Lion)

EXTRA RELEVANT SYSTEM CONFIGURATION :
swiss french keyboard

A DESCRIPTION OF THE PROBLEM :
If i type CTRL+Z KeyEvent.getKeyChar returns 89 instead 90 on a fr_CH keyboard in JDK 7 on MacOS X10.7.3
If i type CTRL+Y KeyEvent.getKeyChar returns 90 instead 89
The same synptom is appear also with the ALT+ modifier.
With the SHIFT+ and META+ modifiers it works.

REGRESSION. Last worked in version 6u29

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
private void jTextField1KeyPressed(java.awt.event.KeyEvent evt) {
        int onmask = KeyEvent.SHIFT_DOWN_MASK;
        int offmask = 0;
        if ((evt.getModifiersEx() & (onmask | offmask)) == onmask && evt.getKeyCode() == KeyEvent.VK_Z) {
            // do some thing
           }
    }

or

KeyStroke CTRL_Z = KeyStroke.getKeyStroke(KeyEvent.VK_Z,KeyEvent.CTRL_MASK);
jTextField1.getInputMap(JComponent.WHEN_FOCUSED).put(CTRL_Z,"zoomPanel");
jTextField1.getActionMap().put("zoomPanel", new javax.swing.AbstractAction() {
    public void actionPerformed(java.awt.event.ActionEvent evt) {
        zoomPanel();
    }
});

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
CTRL+Z -> 90
CTRL+Y-> 89

ALT+Z -> 90
ALT+Y-> 89
ACTUAL -
CTRL+Z -> 89
CTRL+Y-> 90

ALT+Z -> 89
ALT+Y-> 90

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
private void jTextField1KeyPressed(java.awt.event.KeyEvent evt) {
        int onmask = KeyEvent.SHIFT_DOWN_MASK;
        int offmask = 0;
        if ((evt.getModifiersEx() & (onmask | offmask)) == onmask && evt.getKeyCode() == KeyEvent.VK_Z) {
            // do some thing
           }
    }

or

KeyStroke CTRL_Z = KeyStroke.getKeyStroke(KeyEvent.VK_Z,KeyEvent.CTRL_MASK);
jTextField1.getInputMap(JComponent.WHEN_FOCUSED).put(CTRL_Z,"zoomPanel");
jTextField1.getActionMap().put("zoomPanel", new javax.swing.AbstractAction() {
    public void actionPerformed(java.awt.event.ActionEvent evt) {
        zoomPanel();
    }
});
---------- END SOURCE ----------