I need to randomly select a JButton that is not already disabled. I have 15 buttons all together. The user selects a button, it is then disabled, the computer is suppose to then randomly select a button that is not disabled. I am using setEnabled(false), to disable the button. I am not too good at Java and I am a bit lost on how I would do this! Sorry if this is an easy question!
Any help would be great!
I don't see how a switch is useful, myself.
* Instead imagine an array of 15 JButtons, say buttons
* Randomly select an offset in the array, say j
* disable buttons[j]
What if buttons[j] is already disabled (you said *one* would be)?
Well you can do the random select repeatedly until you succeed --
14-out-of-15 is pretty good odds.
> how would it know which buttons are disabled and which ones aren't?
Doesn't JButton have a method named isEnabled?
JButton[] buttonArray = new JButton[]
{
button1,
button2,
button3,
///etc
};
You can select a random button like this.
Random randGen = new Random();
JButton randomButton = buttonArray[randGen.nextInt(buttonArray.length)];
ok, im not getting that error anymore. Now, randomButton is selecting 5 buttons instead of one and I am getting the following error:
random: javax.swing.JButton[,45,0,45x52,alignmentX=0.0,alignmentY=0.5,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@1f78040,flags=296,maximumSize=,minimumSize=,preferredSize=,defaultIcon=o.gif,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=2,left=14,bottom=2,right=14],paintBorder=true,paintFocus=true,pressedIcon=,rolloverEnabled=true,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=,defaultCapable=true]
random: javax.swing.JButton[,0,52,45x52,alignmentX=0.0,alignmentY=0.5,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@1f78040,flags=296,maximumSize=,minimumSize=,preferredSize=,defaultIcon=o.gif,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=2,left=14,bottom=2,right=14],paintBorder=true,paintFocus=true,pressedIcon=,rolloverEnabled=true,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=,defaultCapable=true]
random: javax.swing.JButton[,45,0,45x52,alignmentX=0.0,alignmentY=0.5,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@1f78040,flags=296,maximumSize=,minimumSize=,preferredSize=,defaultIcon=o.gif,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=2,left=14,bottom=2,right=14],paintBorder=true,paintFocus=true,pressedIcon=,rolloverEnabled=true,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=,defaultCapable=true]
random: javax.swing.JButton[,90,52,45x52,alignmentX=0.0,alignmentY=0.5,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@1f78040,flags=296,maximumSize=,minimumSize=,preferredSize=,defaultIcon=o.gif,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=2,left=14,bottom=2,right=14],paintBorder=true,paintFocus=true,pressedIcon=,rolloverEnabled=true,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=,defaultCapable=true]
random: javax.swing.JButton[,45,104,45x52,alignmentX=0.0,alignmentY=0.5,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@1f78040,flags=296,maximumSize=,minimumSize=,preferredSize=,defaultIcon=o.gif,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=2,left=14,bottom=2,right=14],paintBorder=true,paintFocus=true,pressedIcon=,rolloverEnabled=true,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=,defaultCapable=true]
random: javax.swing.JButton[,45,104,45x52,alignmentX=0.0,alignmentY=0.5,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@1f78040,flags=296,maximumSize=,minimumSize=,preferredSize=,defaultIcon=o.gif,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=2,left=14,bottom=2,right=14],paintBorder=true,paintFocus=true,pressedIcon=,rolloverEnabled=true,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=,defaultCapable=true]
random: javax.swing.JButton[,45,104,45x52,alignmentX=0.0,alignmentY=0.5,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@1f78040,flags=296,maximumSize=,minimumSize=,preferredSize=,defaultIcon=o.gif,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=2,left=14,bottom=2,right=14],paintBorder=true,paintFocus=true,pressedIcon=,rolloverEnabled=true,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=,defaultCapable=true]
random: javax.swing.JButton[,45,52,45x52,alignmentX=0.0,alignmentY=0.5,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@1f78040,flags=296,maximumSize=,minimumSize=,preferredSize=,defaultIcon=o.gif,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=2,left=14,bottom=2,right=14],paintBorder=true,paintFocus=true,pressedIcon=,rolloverEnabled=true,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=,defaultCapable=true]
