_上述字符

Question

我想发送som下划线。但它会重播错误。说：

_ 上述字符的密钥代码无效

此错误是默认情况下的sendet： 默认：         抛出新的IllegalArgumentException（＆＃34;不能输入字符＆＃34; +字符）;

我的环境：

IntelliJ IDEA 2018.1（终极版） JRE：1.8.0_152-release-1136-b20 amd64 JVM：JetBrains s.r.o的OpenJDK 64位服务器VM Windows 10 10.0

BTW我现在（28.4.2018 20:38）将它转换为kotlin我得到了同样的错误：https://gist.github.com/f61039faddaad67eaaf8c825f94934c4

来源：

import java.awt.*;
import java.awt.event.KeyEvent;
//
public class Keyboard {

  private Robot robot;

  public static void main(String... args) throws Exception
  {

    Keyboard keyboard = new Keyboard();
    keyboard.type("_");
  }

  public Keyboard() throws AWTException
  {
    this.robot = new Robot();
    robot.delay(500);
    robot.setAutoDelay(2);
    robot.setAutoWaitForIdle(true);
  }

  public Keyboard(Robot robot)
  {
    this.robot = robot;
  }

  public void type(CharSequence characters)
  {
    int length = characters.length();
    for (int i = 0; i < length; i++)
    {
      char character = characters.charAt(i);
      type(character);
    }
  }

  public void enter()
  {
    robot.keyPress(KeyEvent.VK_ENTER);
  }

  public void type(char character){
    System.out.println(character);
    switch (character) {
      case '_': doType(KeyEvent.VK_UNDERSCORE); break;
      default:
        throw new IllegalArgumentException("Cannot type character " + character);
    }
  }

  private void doType(int keyCode){
    try{
      robot.keyPress(keyCode);
      robot.keyRelease(keyCode);
    }
    catch(Exception e){
      System.out.println("Invalid key code(s) for above character");
    }
  }

  private void doType(int keyCode1, int keyCode2){
    try{
      robot.keyPress(keyCode1);
      robot.keyPress(keyCode2);
      robot.keyRelease(keyCode2);
      robot.keyRelease(keyCode1);
    }
    catch(Exception e){
      System.out.println("Invalid key code(s) for above character");
    }
  }
}