240625

1. method의 4가지 종류

parameter가 없고 return이 없는 method

package kr.co.archive;

public class test {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		test_method();
	}
	
	public static void test_method() {
		System.out.println("Hello!");
	}
}

 

parameter가 있고 return이 없는 method

package kr.co.archive;

public class test {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		test_method(1);
	}
	
	public static void test_method(int i) {
		System.out.println("Hello!");
	}
}

 

parameter가 없고 return이 있는 method

package kr.co.archive;

public class test {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		test_method();
	}
	
	public static int test_method() {
		System.out.println("Hello!");
		return 1;
	}
}

 

parameter가 있고 return이 있는 method

package kr.co.archive;

public class test {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		test_method(1);
	}
	
	public static int test_method(int i) {
		System.out.println("Hello!");
		return 1;
	}
}