【Groovy】Groovy 动态语言特性 ( Groovy 中的变量自动类型推断以及动态调用 | Java 中必须为变量指定其类型 )

def name

name = "Tom"

class Groovy {
    static void main(String[] args) {
        def name = "Tom"
        name.contains("T")
    }
}

public class Groovy implements GroovyObject {
    @Generated
    public Groovy() {
        CallSite[] var1 = $getCallSiteArray();
        super();
        MetaClass var2 = this.$getStaticMetaClass();
        this.metaClass = var2;
    }

    public static void main(String... args) {
        CallSite[] var1 = $getCallSiteArray();
        Object name = "Tom";
        var1[0].call(name, "T");
    }

    @Generated
    @Internal
    public MetaClass getMetaClass() {
        MetaClass var10000 = this.metaClass;
        if (var10000 != null) {
            return var10000;
        } else {
            this.metaClass = this.$getStaticMetaClass();
            return this.metaClass;
        }
    }

    @Generated
    @Internal
    public void setMetaClass(MetaClass var1) {
        this.metaClass = var1;
    }
}

    public static void main(String... args) {
        CallSite[] var1 = $getCallSiteArray();
        Object name = "Tom";
        var1[0].call(name, "T");
    }

public class Java {
    public static void main(String[] args) {
        Object name = "Tom";
        name.contains("T");
    }
}

Cannot resolve method 'contains' in 'Object'