工作應用/鬼故事

Company Ghost Story 公司鬼故事 11

contents

  1. 1. Java
    1. 1.1. Over Overload
    2. 1.2. One-Format Multiple-Ways

Java

Over Overload

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class OhMyGod {
    public void run() {System.out.println("A");}
    public void run(String t) {System.out.println("B");}
    public <T> void run(T[] t) {System.out.println("C");}
    public <T> void run(T t) {System.out.println("D");}
    public static void run(String... t) {System.out.println("E");}
    public static void main(String[] args) {
        new OhMyGod().run();
        new OhMyGod().run(new String[0]);
        new OhMyGod().run("1");
        new OhMyGod().run("1", "2");
    }
} // AEBE, little strange

One-Format Multiple-Ways

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class FileIn {
    private boolean isCSV; // why not enum
    private boolean isXML;
    private boolean isJSON;
    public void setIsCSV(boolean e) {isCSV = e;}
    public void setIsXML(boolean e) {isXML = e;}
    public void setIsJSON(boolean e) {isJSON = e;}
    public void import(File file) {
        // why not if-else
        if (isCSV) CSVIn(file); 	//??? 
        if (isXML) XMLIn(file); 	//???
        if (isJSON) JSONIn(file); 	//???
    }
}