计数按钮点击 [英] count button clicks

问题描述

我想计算使用GUI点击按钮的次数。

I want to count the number of times the button is clicked using GUI.

我做了这段代码：

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) 
 {                                         
  int clicked = 0;
  clicked++;
  System.out.println(clicked);
 }    

但是每次单击按钮时它都会显示输出1。

But it showing the output "1", each time I click the button.

我希望每次点击按钮向我显示计数。

I want every time I click the button to show me the count.

ex：如果我点击按钮两次，它应该给我输出2。

ex: If I click the button two times it should give me output of "2".

推荐答案

每次点击都会重置计数器，因为你已经在action方法中定义了变量。尽量不这样做。

You are resetting the counter every time you click, because you have defined the variable inside the action method. Try not doing that.

int clicked = 0; // move this outside
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) 
{                                         
    // int clicked = 0; -- this resets it to 0 each time
    clicked++;
    System.out.println(clicked);
}

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