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居然没有java.lang.stringBuilder?
昨天编译书上的几个例程,凡是涉及到string1+string2的地方,编译就不通过,说找不到java.lang.stringBuilder,j2me不会没有stringBuilder的,我以前的程序不涉及string+string的也能执行,到底是怎么回事呢?
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