package one;
public interface Constants {
String NAME="name1";
int MAX_VAL=25;
}
或
package two;
public class Constants {
public static final String NAME="name1";
public static final int MAX_VAL=25;
}
package three;
//make the class non-extendable by adding final 增加final关键字来避免继承
public final class Constants {
//Hide the constructor 隐藏构造器
private Constants(){}
public static String NAME="name";
}
import static three.Constants.NAME;
public class UseConstants {
public static void main(String[] args) {
System.out.println("the value of constants is"+NAME);
}
}
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