Java_基礎_參數傳遞

Java中方法的參數傳遞均爲按值傳遞，即使傳遞的是對象或者數組，傳遞過去的也是引用的拷貝。

package com.algorithms;

/**
 * Created by 田爽 on 2015/9/27 9:16.
 */
public class Person {
    private int age;

    public Person(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Person{" +
                "age=" + age +
                '}';
    }

}

package com.algorithms;

/**
 * Created by 田爽 on 2015/9/15 19:49.
 */
public class Test {
    public static void main(String[] args) {
        Person person = new Person(10);
        transmit(person);
        System.out.println(person);
    }

    private static void transmit(Person person) {
        person = new Person(20);
    }
}