[英]Java:How to align JPanels
I have this code but it doesn't work: 我有此代码,但它不起作用:
jPanel1.add(jLabel1);
jPanel2.add(jButton1);
jPanel2.add(jButton2);
jPanel3.add(jPanel1,jPanel1.TOP_ALIGNMENT);
jPanel3.add(jPanel2,jPanel2.BOTTOM_ALIGNMENT);
setContentPane(jPanel3);
pack();
Please tell me why! 请告诉我为什么!
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