摘要:
package demo; public class Tongji { private static int n; public Tongji() { n++;//次new一个对象的时候都可以给n加1 } public static int getNum() { return n;//返回n值 } 阅读全文
摘要:
Addition.java 两数相加 源代码: // An addition program import javax.swing.JOptionPane; // import class JOptionPane public class Addition { public static void 阅读全文