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  • 判断是否及格保证程序不崩溃

    package demo;
    import javax.swing.JOptionPane;
    
    class NotNumber extends Exception{
    }
    public class Credit {
        public static void main(String[] args){
            int cre = 0;
            String c;
            try{
            c=JOptionPane.showInputDialog("请输入成绩:");
            cre = Integer.parseInt(c);
            }
            catch(Exception e){    
                cre = 200;
            }
            if(cre<60)
            {
                JOptionPane.showMessageDialog(null,"不及格", "result",JOptionPane.INFORMATION_MESSAGE);
            }
            else if(cre<70){
                JOptionPane.showMessageDialog(null,"及格", "result",JOptionPane.INFORMATION_MESSAGE);
            }
            else if(cre<80){
                JOptionPane.showMessageDialog(null,"中", "result",JOptionPane.INFORMATION_MESSAGE);
            }
            else if(cre<90){
                JOptionPane.showMessageDialog(null,"良", "result",JOptionPane.INFORMATION_MESSAGE);
            }
            else if(cre<=100){
                JOptionPane.showMessageDialog(null,"优", "result",JOptionPane.INFORMATION_MESSAGE);
            }
            else if(cre==200){
                JOptionPane.showMessageDialog(null,"输入数据有误,请重新输入", "worning",JOptionPane.INFORMATION_MESSAGE);
            }
        }
        
    }
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  • 原文地址:https://www.cnblogs.com/chengez/p/4962414.html
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