在控制台中将多个字符串模式打印到一行中

var str1 = "Hello";
var str2 = "World";
var str3 = "!";
console.log(str1 + " " + str2 + str3);

String str1 = "Hello";
String str2 = "World";
String str3 = "!";
System.out.println(str1 + " " + str2 + str3);

String str1 = "Hello";
String str2 = "World";
String str3 = "!";
String result = str1 + " " + str2 + str3;
assertEquals("Hello World!", result);

SELECT CONCAT('Hello', ' ', 'World', '!') AS result;

str1="Hello"
str2="World"
str3="!"
echo $str1" "$str2$str3

apiVersion: v1
kind: Pod
metadata:
  name: my-pod
spec:
  containers:
    - name: my-container
      image: my-image
      env:
        - name: MESSAGE
          value: "Hello World!"
      command: ["echo", "$(MESSAGE)"]