java第十二周作业
1.
package dbhuis; public class lj { int x; int y; public Point(int x0,int y0){ super(); this.x=x0; this.y=y0; } public Point() { super(); } public String movePoint(int dx,int dy){ x=dx+x; y=dy+y; return("x为"+x+",y为"+y); } public static void main(String[] args){ Point p1=new Point(4,2); System.out.println(p1.movePoint(5, 5)); Point p2=new Point(9,6); System.out.println(p2.movePoint(7, 8)); } }
2.
package askhjdiu; public class lj { /** * @param args */ int length; int width; public int getArea(int length,int width){ return length*width; } public int getPer(int length,int width) { return(length+width)*2; } public void showAll(){ System.out.println("长方形的长是"+length+",宽是"+width+",周长是"+(length+width)*2+",面积是"+length*width); } public Rectangle(int length,int width){ super(); this.length=length; this.width=width; } public static void main(String[] args){ //TODO Auto-generated method stub Rectangle r=new Rectangle(4,2); r.showAll(); } }
3.
package shdijj; public class lj { char coulour; int cpu; public void show(){ System.out.println("笔记本颜色是"+coulour+"色"+",型号是"+cpu); } public Computer(char coulour,int cpu){ super(); this.coulour=coulour; this.cpu=cpu; } public Computer(){ super(); } } package shdijj ; public class Test { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Computer c=new Computer(); c.coulour='粉'; c.cpu=1; c.show(); Computer c1=new Computer('白',2); c1.show(); } }