| 知乎专栏 |
一定字符串数组
String[] str={"AAA","BBB","CCC"};
String str[]={"AAA","BBB","CCC"};
String to Array
package cn.netkiller.java;
public class StringToArray {
public static void main(String[] args) {
// TODO Auto-generated method stub
String str="a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z";
String[] array = null;
array = str.split(",");
for(int i=0; i<array.length; i++){
System.out.println(array[i]);
}
}
}
public static void main(String[] args) {
try {
for (String arg : args) {
System.out.println(arg);
}
} catch (Exception e) {
System.out.println(e.getMessage());
}
}
package cn.netkiller.java;
import java.util.Arrays;
public class ArrayToString {
public static void main(String[] args) {
String[] array = {"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"};
System.out.println(Arrays.toString(array));
System.out.println(Arrays.toString(array).replaceAll(", |\\[|\\]", ""));
}
}
String[][] deepArray = new String[][] {{"John", "Mary"}, {"Alice", "Bob"}};
System.out.println(Arrays.toString(deepArray));
//output: [[Ljava.lang.String;@106d69c, [Ljava.lang.String;@52e922]
System.out.println(Arrays.deepToString(deepArray));
Output:
[[John, Mary], [Alice, Bob]]
String[] array = {"neo", "chen"};
String string = String.join(",", array)
// 输出结果 "neo,chen"