java方法重载和重载方法_我们可以在Java中重载main（）方法吗？

叁歲伎倆 2023-03-05 12:54 17阅读 0赞

java方法重载和重载方法

The question is that **"can we overload main() method in Java?"**

问题是**“我们可以在Java中重载main()方法吗？”**

*  Yes, We can **overload the main() method in Java**.
    
    是的，我们可以**重载Java中的main()方法** 。
 *  JVM calls any method by its signature or in other words JVM looks signature and then call the method.
    
    JVM通过其签名调用任何方法，换句话说，JVM查找签名，然后调用该方法。
 *  If we **overload a main() method** in a program then there will be multiple **main() methods** in a program. So JVM calls which method? we don't need to confuse if we have multiple **main() methods** then JVM calls only one **main() method** with (string\[\] argument) by default.
    
    如果我们在程序中**重载main()方法** ，则程序中将有多个**main()方法** 。 那么JVM调用哪个方法？ 如果我们有多个**main()方法，**则无需混淆，然后JVM默认仅使用(string \[\]参数)调用一个**main()方法** 。

**Example:**

**例：**

class MainMethodOverloading {
        
        public static void main(String[] args) {
        
            System.out.println("We are in String[] args");
        }
    
        public static void main(int args) {
        
            System.out.println("We are in int args");
        }
    
        public static void main(String args) {
        
            System.out.println("We are in String args");
        }
    }

**Output**

**输出量**

E:\Programs>javac MainMethodOverloading.java
    
    E:\Programs>java MainMethodOverloading
    We are in String[] args

By default JVM call only one **main() method of a String argument**, But if we want to call another **main() method** or any other **overloaded main() method**, then we can do only one thing that is we can call **overloaded main() method explicitly**.

默认情况下，JVM仅调用**String参数的**一个**main()方法** ，但是如果我们要调用另一个**main()方法**或任何其他**重载的main()方法** ，那么我们只能做一件事，即可以调用**重载的main() )方法** 。

**We can call other main() methods inside the original main() method with a String argument**.

**我们可以使用String参数在原始main()方法内调用其他main()方法** 。

**Example:**

**例：**

// Java Program to demonstrate overloading of 
    // main() method
    import java.io.*;
    
    class MainMethodOverloading {
        
        // Origional main() method
        public static void main(String[] args) {
        
            System.out.println("Hi, We are in main (String [] args) ");
            MainMethodOverloading.main("Call main() with one argument");
        }
        // These are the overloaded main() methods 
        public static void main(String args1) {
        
            System.out.println(args1);
            MainMethodOverloading.main("call main() with", "two argument");
        }
        public static void main(String args1, String args2) {
        
            System.out.println(args1 + args2);
            MainMethodOverloading.main("call main() with", "three argument", "from two argument main()");
        }
        public static void main(String args1, String args2, String args3) {
        
            System.out.println(args1 + args2 + args3);
        }
    }

**Output**

**输出量**

E:\Programs>javac MainMethodOverloading.java
    
    E:\Programs>java MainMethodOverloading
    Hi, We are in main (String [] args) 
    Call main() with one argument
    call main() withtwo argument
    call main() withthree argumentfrom two argument main()

> 翻译自: [https://www.includehelp.com/java/can-we-overload-main-method-in-java.aspx][https_www.includehelp.com_java_can-we-overload-main-method-in-java.aspx]

java方法重载和重载方法

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