令牌语法错误，lambda表达式构造错误 [英] Syntax error on token(s), misplaced construct(s) for lambda expression

问题描述

我在用于线程的以下代码中遇到语法问题:

I have encountered a syntax problem in the following code used for Threading:

        btnNewButton.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e){
            new Thread(() -> {
                GrabberShowUsesCallable gs = new GrabberShowUsesCallable();
                //GrabberShow gs = new GrabberShow();
                ExecutorService executorService = Executors.newSingleThreadExecutor();
                Future<String> future = executorService.submit(gs);
                String cc;
                try {
                    //Add data to table
                    cc = future.get();
                    model.addRow(new Object[] {row,0,cc,0});
                    row=row+1;
                    Thread.currentThread().stop();
                } catch (InterruptedException | ExecutionException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }
            }).start();
        }
    });

第3行新线程出现错误:

I got error at line 3 new thread:

此行有多个标记 -令牌语法错误，放错了位置 结构体) -令牌语法错误，请将其删除 令牌

Multiple markers at this line - Syntax error on token(s), misplaced construct(s) - Syntax error on tokens, delete these tokens

在这一行中，我遇到了两个语法错误，一个来自(()

In that line I got two syntax error, one from (()

令牌语法错误，构造放置错误

Syntax error on token(s), misplaced construct(s)

和-> {

令牌语法错误，请删除这些令牌

Syntax error on tokens, delete these tokens

该代码在3台不同的笔记本电脑上运行良好，但其中一台(我的笔记本电脑)遇到此问题.我正在使用安装了jre 8.0和jdk 8.0的Eclipse.

The code was running fine on 3 different laptops, except one (my laptop) encountered this problem. I am using Eclipse with jre 8.0 and jdk 8.0 installed.

推荐答案

如果eclipse默认值不是java8源级别，请确保您的java源级别也是java8，在eclipse项目设置中会被覆盖.这是一个典型的疏忽.

Make sure your java source level is java8 too, in the eclipse project settings overrides, if the eclipse default is not java8 source level. This is a typical overlook.

这篇关于令牌语法错误，lambda表达式构造错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！