Main.java

package com;

public class Main {

	public static void main(String[] args) {
		MyString myString = new MyString("x");
		String str = "x";
		System.out.println("1: " + myString.getName() + " " + str);

		foo(myString, str);
		System.out.println("@important 3: " + myString.getName() + " " + str);

		// reset
		myString = new MyString("x");
		str = new String("x");
		System.out.println("4: " + myString.getName() + " " + str);

		fee(myString, str);
		System.out.println("@important 6: " + myString.getName() + " " + str);

		String str2 = str;
		str2 += "*SPOILED*";
		System.out.println("7: " + str + " " + str2);

	}

	public static void foo(MyString myString, String str) {
		myString.setName("y");
		str = "y";
		System.out.println("2: " + myString.getName() + " " + str);
	}

	public static void fee(MyString myString, String str) {
		myString = new MyString("y");
		str = new String("y");
		System.out.println("5: " + myString.getName() + " " + str);
	}
}

class MyString {

	private String name;

	public MyString(String name) {
		this.name = name;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

}