explicitstaticex.java

来自「java编程思想第四版习题答案」· Java 代码 · 共 34 行

// initialization/ExplicitStaticEx.java
// TIJ4 Chapter Initialization, Exercise 14, page 191
/* Create class with static String field initialized at point of definition and
* another one initialized by the static block.  Add static method that prints
* both fields and demonstrates that they are both initialized before thay are
* used.
*/
import static net.mindview.util.Print.*;

class Go {
	static String s1 = "run";
	static String s2, s3;
	static {
		s2 = "drive car";
		s3 = "fly plane";
		print("s2 & s3 initialized");
	}
	static void how() {
		print(s1 + " or " + s2 + " or " + s3);
	}
	Go() { print("Go()"); }
}

public class ExplicitStaticEx {
	public static void main(String[] args) {
		print("Inside main()");
		Go.how();
		print("Go.s1: " + Go.s1);
	}
	static Go g1 = new Go();
	static Go g2 = new Go();
}