java ffffff返回整数 java方法返回

方法的返回值类型解析

1.基本类型
2.数组
3.字符串
4.自定义的类

public class MethodReturn {
	public static void main(String[] args) {
		int result1= method1();
		System.out.println(result1);//100
		
		int[] result2=method2();
		System.out.println(result2[0]);//10
		System.out.println(result2[1]);//20
		
		String result3 = method3();
		System.out.println(result3);//Hello
		
		Student result4 = method4();
		System.out.println(result4.getAge()+result4.getName());//26姚明
	}
	
	//使用基本类型作为方法的返回值
	public static int method1() {
		int num = 100;
		return num;
	}
	
	//使用数组类型作为方法的返回值
	public static int[] method2() {
		int[] array = {10,20};
		return array;
	}
	
	//使用字符串作为方法的返回值
	public static String method3() {
		String str = "Hello";
		return str;
	}
	
	//使用自定义的类作为方法的返回值
	public static Student method4() {
		Student stu = new Student("姚明",26);
		return stu;
	}
}

public class Student {
	
	private String name;
	private int age;
	
	public Student() {}
	
	public String getName() {
		return name;
	}
	public void setName(String name) {
		 = name;
	}
	
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public Student(String name, int age) {
		super();
		 = name;
		this.age = age;
	}
	
}