摘要:
package c03;class Number{int i;}class Letter{char c;}public class Assignment {static void f(Letter y){y.c = 'z';}public static void main(String args[]){Number n1 = new Number();Number n2 = new Number();n1.i = 12;n2.i = 35;System.out.println("n1 = "+ n1.i + ",n2 = " + n2.i 阅读全文
摘要:
如果一个包里面含有main,都可以作为一个单独的程序来执行。使用java application1.package src;import java.util.*;public class second {public static void main(String[] args){System.out.println(new Date());Properties p = System.getProperties();System.out.println("---Memory Usage22222222222");p.list(System.out);Runtime rt = 阅读全文