Java 初始化执行顺序(转Java编程思想)

package Test3_5;

class Bowl {
	Bowl(int marker) {
		// TODO Auto-generated constructor stub
		System.out.println("Bowl(" + marker + ")");
	}
	void f1(int marker) {
		System.out.println("f1(" + marker + ")");
	} 
}

class Table {
	static Bowl bowl1 = new Bowl(1);
	Table() {
		System.out.println("Table()");
		bowl1.f1(1);
	}
	void f2(int marker) {
		System.out.println("f2(" + marker + ")");
	}
	static Bowl bowl2 = new Bowl(2);
}

class Cupboard {
	Bowl bowl3 = new Bowl(3);
	static Bowl bowl4 = new Bowl(4);
	Cupboard() {
		// TODO Auto-generated constructor stub
		System.out.println("Cupboard()");
		bowl4.f1(2);
	}
	void f3(int marker) {
		System.out.println("f3(" + marker + ")");
	}
	static Bowl bowl5 = new Bowl(5);
}
public class StaticInitialization {
	public static void main(String[] args) {
		System.out.println("Creating new Cupboard() in main");
		new Cupboard();
		System.out.println("Creating new Cupboard() in main");
		new Cupboard();
		table.f2(1);
		cupboard.f3(1);
	}
	static Table table= new Table();
	static Cupboard cupboard = new Cupboard();
}

 运行结果:

Bowl(5)
Bowl(3)
Cupboard()
f1(2)
Creating new Cupboard() in main
Bowl(3)
Cupboard()
f1(2)
Creating new Cupboard() in main
Bowl(3)
Cupboard()
f1(2)
f2(1)
f3(1)

可以看到程序会先初始化静态变量,然后初始化”非静态“变量,最后调用构造器,且static域只会初始化一次后面就不再初始化了。

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转载自blog.csdn.net/qq_39509597/article/details/81983170