public class TestJava4_9 {
public static void main(String args[]) {
int num;
num = star(7);
System.out.println(num+" stars printed");
}
public static int star(int n) {
for (int i = 1; i < 2*n; i++) {
System.out.print("*");
}
System.out.print("\n");
return 2*n;
}
}java method 方法的参数与返回值
原文：http://blog.csdn.net/lua_denis_2014/article/details/42672815
