package ww; public class Rectangle { int cpu; char color; public void all() { System.out.println("颜色是" + color); System.out.println("cpu是" + cpu); } } package ww; public class text { public static void main(String[] args) { Rectangle r1=new Rectangle(); r1.color='黑'; r1.cpu=9100; r1.all(); } }
package www; public class Person { double height; int age; String name; public void sayHello() { System.out.println("Hello,my name is "+name); } } package www; public class PersonCreate { public static void main(String[] args) { Person p1=new Person(); p1.age=34; p1.height=1.73; p1.name="zhangsan"; p1.sayHello(); Person p2=new Person(); p2.age=44; p2.height=1.74; p2.name="lishi"; p2.sayHello(); } }