错误：-source 1.6 不支持菱形运算符

Question

我正在尝试为 hypixel skyblock 制作 1.8.9 forge mod，但我不知道该怎么办了。我不断收到以下错误：

error: diamond operator is not supported in -source 1.6

error: lambda expressions are not supported in -source 1.6

我尝试删除并重新编码该项目，重新启动intellij和我的计算机，更改项目设置中的每个设置，使其在Java 1.8上，但我找不到问题，没有任何效果。

导致问题的代码来自 danker 的 skyblock mod：

package com.salad.ssm.utils.handlers;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import net.minecraft.client.Minecraft;
import net.minecraft.scoreboard.Score;
import net.minecraft.scoreboard.ScoreObjective;
import net.minecraft.scoreboard.ScorePlayerTeam;
import net.minecraft.scoreboard.Scoreboard;
import net.minecraft.util.StringUtils;
import scala.collection.mutable.StringBuilder;

import java.util.ArrayList;
import java.util.Collection;
import java.util.ConcurrentModificationException;
import java.util.List;
import java.util.stream.Collectors;

public class ScoreboardHandler {

    public static String cleanSB(String scoreboard) {
        char[] nvString = StringUtils.stripControlCodes(scoreboard).toCharArray();
        StringBuilder cleaned = new StringBuilder();

        for (char c : nvString) {
            if ((int) c > 20 && (int) c < 127) {
                cleaned.append(c);
            }
        }

        return cleaned.toString();
    }

    public static List<String> getSidebarLines() {
        List<String> lines = new ArrayList<>();
        if (Minecraft.getMinecraft().theWorld == null) return lines;
        Scoreboard scoreboard = Minecraft.getMinecraft().theWorld.getScoreboard();
        if (scoreboard == null) return lines;

        ScoreObjective objective = scoreboard.getObjectiveInDisplaySlot(1);
        if (objective == null) return lines;

        Collection<Score> scores;
        try {
            scores = scoreboard.getSortedScores(objective);
        } catch (ConcurrentModificationException ex) {
            ex.printStackTrace();
            return new ArrayList<>();
        }

        List<Score> list = scores.stream()
                .filter(input -> input != null && input.getPlayerName() != null && !input.getPlayerName()
                        .startsWith("#"))
                .collect(Collectors.toList());

        if (list.size() > 15) {
            scores = Lists.newArrayList(Iterables.skip(list, scores.size() - 15));
        } else {
            scores = list;
        }

        for (Score score : scores) {
            ScorePlayerTeam team = scoreboard.getPlayersTeam(score.getPlayerName());
            lines.add(ScorePlayerTeam.formatPlayerName(team, score.getPlayerName()));
        }

        return lines;
    }
}

请帮忙，已经3个小时了...

Answer 1

是两行...我很不安

他们在这里：

sourceCompatibility = 1.8
targetCompatibility = 1.8

将它们放入 build.gradle 文件中，即可编译