【JAVA】String[]配列の相関

配列の作成：

①String[] str = new String[5];

②String[] str = new String[]{"","","","",""};

③String[] str = {"","","","",""};

④String[][] str = new String[2][2];

⑤String[] str = new String[]{};

 配列の値の取得：

//普通の方法
String[][] str = new String[][]{{"a","b","c"},{"d","e","f"},{"g","h","i"}};
for(int i=0;i<str.length;i++){
    for(int j=0;j<str[i].length;j++){
        System.out.println("str["+i+"]["+j+"]:"+str[i][j]);
    }
}
//方法一（推薦）
String[][] str = new String[][]{{"a","b","c"},{"d","e","f"},{"g","h","i"}};
for(String[] row : str){
    for(String s : row){
        System.out.println(s);
    }
}
//方法二（推薦）
String[][] str = new String[][]{{"a","b","c"},{"d","e","f"},{"g","h","i"}};
System.out.println(Arrays.deepToString(str));