java中JTextArea添加滚动条

xiaoxiao2021-02-28 28

JTextArea txaDisplay = new JTextArea(); JScrollPane scroll = new JScrollPane(txaDisplay); //把定义的JTextArea放到JScrollPane里面去 //分别设置水平和垂直滚动条自动出现 scroll.setHorizontalScrollBarPolicy( JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED); scroll.setVerticalScrollBarPolicy( JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED); //分别设置水平和垂直滚动条总是出现 scroll.setHorizontalScrollBarPolicy( JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS); scroll.setVerticalScrollBarPolicy( JScrollPane.VERTICAL_SCROLLBAR_ALWAYS); //分别设置水平和垂直滚动条总是隐藏scroll.setHorizontalScrollBarPolicy( JScrollPane.HORIZONTAL_SCROLLBAR_NEVER); scroll.setVerticalScrollBarPolicy( JScrollPane.VERTICAL_SCROLLBAR_NEVER);

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