这个我做完了 希望您能满意
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public class Rectangle {
private double height;
private double width;
private String color;
public double getHeight() {
return height;
}
public void setHeight(double height) {
this.height = height;
}
public double getWidth() {
return width;
}
public void setWidth(double width) {
this.width = width;
}
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
public Rectangle(double width,double height,String color){
this.setColor(color);
this.setHeight(height);
this.setWidth(width);
}
public void getArea(){
double area=0;
area=this.height*this.width;
System.out.println("矩形的面积为"+area);
}
public String toString(){
String recStr="矩形的高度："+this.getHeight()+"宽度："+this.getWidth()
+"颜色:"+this.getColor();
return recStr;
}
/**
* 测试函数
* @param args
*/
public static void main(String[] args) {
Rectangle rec=new Rectangle(3, 4, "红色");
rec.getArea();
System.out.println(rec.toString());
}
}
兄弟帮你写了一个：
import java.awt.Button;
import java.awt.Color;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.Random;
public class Print {
public static void main(String[] args) {
new Te();
}
}
class Te extends Frame implements ActionListener {
Color cc = Color.red;
int x = -20, y = -50;
Random r = new Random();
public Te() {
this.setLayout(null);
Button b = new Button("画圆");
this.add(b);
b.setBounds(30,30,50,50);
b.addActionListener(this);
this.addWindowListener(new WindowAdapter () {
@Override
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
this.setBounds(200,200,500,400);
this.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
this.cc = Color.red;
this.x = r.nextInt(400);
do {
int x1 = r.nextInt(300);
this.y = x1;
} while (this.y 50);
this.repaint();
}
@Override
public void paint(Graphics g) {
Color c = g.getColor();
g.setColor(cc);
g.drawRect(x,y,50,50);
g.setColor(c);
}
}
Scanner sc = new Scanner(System.in);
int length = sc.nextInt();
int width = sc.nextInt();
for(int i = 0; i length; i++){
for(int j = 0; j width; j++){
System.out.print("*");
}
System.out.println();
}