求两点之间的距离java
求两点间的距离,使用输入框输入;其中需要import javax.swing.JOptionPane; 题目简单直接上代码。
- public class p68 {
- public static void main(String[] args)
- {
- next Juli= new next();
- Juli.jisuan(null);
- }
- }
具体求法,将double类型转换为String,直接加String=“”+double;
- import javax.swing.JOptionPane;
- public class next {
- public void jisuan(String[] args)
- {
- String x1=JOptionPane.showInputDialog(“Enter x1”);
- String y1=JOptionPane.showInputDialog(“Enter y1”);
- String x2=JOptionPane.showInputDialog(“Enter x2”);
- String y2=JOptionPane.showInputDialog(“Enter y2”);
- double X1=Double.parseDouble(x1);
- double Y1=Double.parseDouble(y1);
- double X2=Double.parseDouble(x2);
- double Y2=Double.parseDouble(y2);
- X2=X2-X1;
- X2=X2*X2;
- Y2=Y2-Y1;
- Y2=Y2*Y2;
- Y2=X2+Y2;
- double answer=Math.pow(Y2, 0.5);
- String ans=“”+answer;
- JOptionPane.showMessageDialog(null,ans);
- }
- }
java换行示例:String set1=”hfjkehfgdksh/n”+”dsjhfcjdsh/n”; 可实现换行。