一元运算符感叹号的操作数类型actionlistener不正确

Question

第2行出现"一元运算符的操作数类型actionlistener错误！"错误，第2行和第8行出现"不兼容类型：boolean无法转换为actionlistener"错误。我在.start（）的第5行也有一个错误，指出找不到符号start。有人知道这里出了什么问题吗？

private void walkjButtonActionPerformed(java.awt.event.ActionEvent evt) {                                            
    if(!walk){ //error here
        walk = true; //here
        timer = new Timer(40, walk);
        walk.start(); //here
    }
    else{
        timer.stop();
        walk = false; //and here      
    }
}                                           
private ActionListener walk = new ActionListener(){
    public void actionPerformed(ActionEvent e){
        if(leftLegWalk){
            while (leftLegLength <=50){
                leftLegLength -= 5;
                }
            while (leftLegLength >=20) {
                    leftLegLength +=5;
                }
            }
        else {
            while (rightLegLength <=50) {
                rightLegLength -=5;
                }
            while (rightLegLength >=20) {
                rightLegLength += 5;
                }
            }
        }
    };
boolean running = false;
int count = 0; 
boolean wave = true;
boolean leftLegWalk = true;
boolean rightLegWalk = false;
int leftLegLength = 50;
int rightLegLength = 50;
private Timer timer;

Answer 1

您混淆了变量。变量CCD_ 1是CCD_。不能将其视为boolean（使用if测试其真值，分配true或false）或Thread（调用start()）。很难确定你想完成什么，但我认为你想要的是：

private void walkjButtonActionPerformed(java.awt.event.ActionEvent evt) {                                            
    if(!running){
        running = true;
        timer = new Timer(40, walk);
        timer.start();
    }
    else{
        timer.stop();
        running = false;
    }
}