java - 使用特殊格式从JAR提取类名称

如何从jar文件中提取所有可用的类，并在一些简单的处理之后将输出转储到txt文件中。
例如，如果我运行jar tf commons-math3-3.1.6.jar输出的子集将是：

org/apache/commons/math3/analysis/differentiation/UnivariateVectorFunctionDifferentiator.class
org/apache/commons/math3/analysis/differentiation/FiniteDifferencesDifferentiator$2.class
org/apache/commons/math3/analysis/differentiation/SparseGradient$1.class
org/apache/commons/math3/analysis/integration/IterativeLegendreGaussIntegrator$1.class
org/apache/commons/math3/analysis/integration/gauss/LegendreHighPrecisionRuleFactory.class
org/apache/commons/math3/analysis/integration/gauss/BaseRuleFactory.class
org/apache/commons/math3/analysis/integration/gauss/HermiteRuleFactory.class
org/apache/commons/math3/analysis/integration/gauss/LegendreRuleFactory.class
org/apache/commons/math3/analysis/integration/gauss/GaussIntegratorFactory.class

我想全部转换成。
所有的美元。
最后，我还想删除出现在每个字符串末尾的.class。
例如：

org/apache/commons/math3/analysis/differentiation/FiniteDifferencesDifferentiator$2.class

会变成

org.apache.commons.math3.analysis.differentiation.FiniteDifferencesDifferentiator.2

最佳答案

String path = "org/apache/commons/math3/analysis/integration/gauss/BaseRuleFactory.class";
path = path.replaceAll("/", ".")
           .replaceAll("\\$(\\d+)\\.class", "\\.$1");