root / src / utils / Utils.java @ 2
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package utils; |
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import java.io.File; |
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import java.io.IOException; |
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/**
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* Utils
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*/
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public class Utils { |
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public static boolean isInteger(String s) { |
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if (s.isEmpty())
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return false; |
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for (int i = 0; i < s.length(); i++) { |
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if (i == 0 && s.charAt(i) == '-') { |
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if (s.length() == 1) |
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return false; |
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else
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continue;
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} |
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if (Character.digit(s.charAt(i), 10) < 0) |
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return false; |
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} |
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return true; |
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} |
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public static boolean fileExists(String filePath) { |
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return new File(filePath).isFile(); |
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} |
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public static boolean isFloat(String s) { |
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return s.matches("[0-9]*\\.?[0-9]+"); |
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} |
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public static boolean deleteDirectoryRecursively(File file) /*throws IOException */{ |
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File[] files = file.listFiles(); |
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if(files!=null) { |
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for(File f: files) { |
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if(f.isDirectory()) {
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deleteDirectoryRecursively(f); |
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} else {
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f.delete(); |
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} |
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} |
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} |
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return file.delete();
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} |
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} |