在Netbeans中设置JLabel文本不起作用

Question

I have used the GUI builder to make some JLabel in a JFrame. These variables are locked and I find it difficult to use them to in another class.

 // Variables declaration - do not modify                     
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
public javax.swing.JLabel title;
// End of variables declaration    

I had to set the variables public before I could use them in a different class.

Answer 1

转到init方法并执行

title = new JLabel("This is my Title label. No?");

Answer 2

例如，在initComponent()调用方法之后添加

jLabel2.setText(test text);

Answer 3

You can't set value to the private variables from anotber class. If you want to do so you can pass the variable as the a parameter and set value. Or you have to make JLable public. `