com.google.common.base.Preconditions.checkArgument : CompilerOptions: NoSuchMethodError

Question

有人知道为什么会出现这个错误吗？

Exception in thread "main" java.lang.NoSuchMethodError:     com.google.common.base.Preconditions.checkArgument(Z)V
    at com.google.common.collect.Lists.computeArrayListCapacity(Lists.java:105)
    at com.google.common.collect.Lists.newArrayList(Lists.java:98)
    at com.google.javascript.jscomp.ComposeWarningsGuard.<init>    (ComposeWarningsGuard.java:83)
    at com.google.javascript.jscomp.CompilerOptions.<init>(CompilerOptions.java:791)

代码

import java.io.File;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.logging.Level;

import com.google.javascript.jscomp.CompilationLevel;
import com.google.javascript.jscomp.CompilerOptions;
import com.google.javascript.jscomp.Compiler;
import com.google.javascript.jscomp.SourceFile;

public class MyJavaScriptCompressor {

    private Compiler cloJsCompressor;

    public MyJavaScriptCompressor() {
    }

    public String closureCompress(File source) {
        CompilerOptions opt = new CompilerOptions();
        int mode = 1;
        CompilationLevel.SIMPLE_OPTIMIZATIONS.setOptionsForCompilationLevel( opt );

        Compiler.setLoggingLevel(Level.OFF);
        cloJsCompressor = new Compiler();
        cloJsCompressor.disableThreads();

        List<SourceFile> externs = Collections.emptyList();
        List<SourceFile> inputs = Arrays.asList(SourceFile.fromFile(source));

        cloJsCompressor.compile( externs, inputs, opt );

        return cloJsCompressor.toSource();
    }
}

生成路径包括

compiler.jar
jsoup.jar
yuicompressor.jar

我怎么才能摆脱它？！

编辑：

错误出现在这一行中：

CompilerOptions opt = new CompilerOptions();

Answer 1

解决了..。

eclipse项目根目录中的.classpath缺少了该行：

<classpathentry kind="lib" path="lib/compiler.jar"/>

我不知道--为什么-- eclipse不能自动修复它。