Java--Code details variable parameter list

The following code is a way to implement a mutable parameter list.

    public static void Printary (object[] objs) {for        (Object obj:objs) {        System.out.print (obj+ "");        }        System.out.println ();    }    public static void Main (string[] args) {        printary (new object[]{1,2,3,4,5});        Printary (New object[]{"ni", "Hao"});    

Output Result:

In this way, you can pass any type, number of arguments to the function. However, the above method is a more outdated method, and after Java SE5 comes out, it provides a more convenient way.

The code is as follows:

public static void Printary (Object ... objs) {for        (object obj:objs) {        System.out.print (obj+ "");        }        System.out.println ();    }    public static void Main (string[] args) {        printary (1,2,3,4,5);                    Printary ("Ni", "Hao");           You do not need to explicitly create an array, which is populated automatically by the compiler.        printary (New object[]{"ni", "Hao"});//You can also pass in an array.        printary ();                         Nullable        Printary (new Integer (1), New Float (2));//can pass different types of parameters    }

Results:

The following code is a way to implement a mutable parameter list.

    public static void Printary (object[] objs) {for        (Object obj:objs) {        System.out.print (obj+ "");        }        System.out.println ();    }    public static void Main (string[] args) {        printary (new object[]{1,2,3,4,5});        Printary (New object[]{"ni", "Hao"});    

Output Result:

In this way, you can pass any type, number of arguments to the function. However, the above method is a more outdated method, and after Java SE5 comes out, it provides a more convenient way.

The code is as follows:

public static void Printary (Object ... objs) {for        (object obj:objs) {        System.out.print (obj+ "");        }        System.out.println ();    }    public static void Main (string[] args) {        printary (1,2,3,4,5);                    Printary ("Ni", "Hao");           You do not need to explicitly create an array, which is populated automatically by the compiler.        printary (New object[]{"ni", "Hao"});//You can also pass in an array.        printary ();                         Nullable        Printary (new Integer (1), New Float (2));//can pass different types of parameters    }

Results: