?? file.java
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public class File { protected String path; public static final char separatorChar = ':'; public File(String path) { if (path == null) { throw new NullPointerException(); } this.path = path; } public String getFileName() { int index = path.lastIndexOf(separatorChar); return (index < 0) ? path : path.substring(index + 1); } public String getPath() { return path; }}
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