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public static String copyValueOf(char[] data)

or

public static String copyValueOf(char[] data, int offset, int count)

public class Test {
    public static void main(String args[]) {
        char[] Str1 = {'h', 'e', 'l', 'l', 'o', ' ', 'r', 'u', 'n', 'o', 'o', 'b'};
        String Str2 = "";

        Str2 = Str2.copyValueOf( Str1 );
        System.out.println("Returned Result: " + Str2);

        Str2 = Str2.copyValueOf( Str1, 2, 6 );
        System.out.println("Returned Result: " + Str2);
    }
}

Returned Result: hello runoob
Returned Result: llo ru