java打印数组内容的方法

循环打印

public void strTo() {
    String[] s = new String[]{"乌鲁木齐", "兰州", "西安", "成都", "重庆"};
    StringBuilder stringBuilder = new StringBuilder();
    for (int i = 0; i < s.length; i++) {
        if (i > 0) {
            stringBuilder.append(",");
        }
        stringBuilder.append(s[i]);
    }
    System.out.println(stringBuilder);
}

Arrays.toString() 打印

public void ArrsysTo() {
    String[] s = new String[]{"乌鲁木齐", "兰州", "西安", "成都", "重庆"};
    System.out.println(Arrays.toString(s));
}

JDK8 的 java.util.Arrays.stream() 打印

public void arraysStreamTo(){
    String[] s = new String[]{"乌鲁木齐", "兰州", "西安", "成都", "重庆"};
    Arrays.stream(s).forEach(System.out::print);
}

Arrays.deepToString() 方法打印

public void arraysDeepTo(){
    String[] s = new String[]{"乌鲁木齐", "兰州", "西安", "成都", "重庆"};
    System.out.println(Arrays.deepToString(s));
}

用list转化打印

public void listTo(){
    String[] s = new String[]{"乌鲁木齐", "兰州", "西安", "成都", "重庆"};
    List<String> list = new ArrayList<>();
    Collections.addAll(list,s);
    System.out.println(list);
}