java去除数组中重复元素

例：String[] str = { "Java", "C++", "Php", "C#", "Python", "C++", "Java" };
List<String> list = new ArrayList<String>();
for (int i = 0; i < str.length; i++) {
if (!list.contains(str[i])) {
list.add(str[i]);
}
}

System.out.println("********");
String[] newStr = list.toArray(new String[1]); //返回一个包含所有对象的指定类型的数组
for (String elementB : newStr) {
System.out.print(elementB + " ");
}
System.out.println("*********");