@Test public void test_upperCase() { String str = "abc"; String result = StringUtils.upperCase(str); Assertions.assertEquals("ABC", result); }
public static String upperCase(final String str) { if (str == null) { return null; } return str.toUpperCase(); }
StringUtils { public static String upperCase(final String str) { if (str == null) { return null; } return str.toUpperCase(); } }
StringUtils { public static String upperCase(final String str) { if (str == null) { return null; } return str.toUpperCase(); }  }
StringUtils { public static String upperCase(final String str) { if (str == null) { return null; } return str.toUpperCase(); }  static String upperCase(final String str); static boolean equals(final String cs1, final String cs2); static boolean isBlank(final String cs); static boolean isNotBlank(final String cs); static String replaceFirst(final String str, final String prefix); }
StringUtils { public static String upperCase(final String str) { if (str == null) { return null; } return str.toUpperCase(); }  static String upperCase(final String str); static boolean equals(final String cs1, final String cs2); static boolean isBlank(final String cs); static boolean isNotBlank(final String cs); static String replaceFirst(final String str, final String prefix);  }