Java中静态变量的适用场景

Java类中的.静态变量在程序运行期间，其内存空间对所有该类的对象实例而言是共享的，有些时候可以认为是全局变量。因此在某些时候为了节省系统内存开销、共享资源，可以将类中的一些变量声明为静态变量，通过下面的例子，你可以发现合理应用静态变量带来的好处：

　　Java代码

public class WeekA{

static class Data {

private int week;

private String name;

Data(int i, String s) {

week= i;

name = s;

}

}

Data weeks[] = {

new Data(1, "Monday"), new Data(2, "Tuesay"), new Data(3, "Wednesday"), new Data(4, "Thursday"), new Data(5, "Friday"), new Data(6, "Saturday"), new Data(7, "Sunday")

};

public static void main(String args[]) {

final int N = 10000;

WeekA weekinstance;

for (int i = 1; i <= N; i++){

weekinstance = new WeekA ();

}

}

}

public class WeekA{

static class Data {

private int week;

private String name;

Data(int i, String s) {

week= i;

name = s;

}

}

Data weeks[] = {

new Data(1, "Monday"), new Data(2, "Tuesay"), new Data(3, "Wednesday"), new Data(4, "Thursday"), new Data(5, "Friday"), new Data(6, "Saturday"), new Data(7, "Sunday")

};

public static void main(String args[]) {

final int N = 10000;

WeekA weekinstance;

for (int i = 1; i <= N; i++){

weekinstance = new WeekA ();

}

}

}