什么是Java相当于在C＃中打印值？

Question

In C#, I can say:

 int myInt = 10;
 int myInt2 = 20;
 Console.WriteLine("My Integer equals {0}, and the other one equals {1}", myInt, myInt2);

And I know how to print things in Java like this:

 int myInt = 10;
 System.out.println("My Integer equals " + myInt);

So how do I combine the two so that in Java, I can print multiple values just like I would in C#?

Answer 1

You can call String.format explicitly:

System.out.println(String.format(
    "My Integer equals %d, and the other one equals %d", myInt, myInt2));

Answer 2

Dont forget the printf statements..

int myInt = 0;
int myInt2 = 20;

System.out.printf("My Integers equal %d, and the other one equals %d\n",
                               myInt, myInt2);

Answer 3

You can use + to display multiple variables

int myInt = 10;
int myInt2 = 20;
System.out.println("My Integer equals " + myInt 
                    + "and second integer is " + myInt2);

Answer 4

You may try MessageFormat class. Your code which is almost the same as your C# code should look something like this:

int myInt = 10;
int myInt2 = 20;
System.out.println(MessageFormat.format("My Integer equals {0}, and the other one equals {1}", myInt, myInt2));

Answer 5

Read up on formatting of strings in java: http://docs.oracle.com/javase/tutorial/essential/io/formatting.html

Essentially, instead of using the index-based formatting approach in C#, you add format specifiers which are processed in the order they exist in the string. For example:

System.out.format("My integer equals %d, and the other one equals %d", myInt, myInt2);

Java uses different specifiers for different value types. %d (used above) indicates integer values. %s would be a string, %f would be a floating-point value, etc. More details can be found in the link above.

Answer 6

int myInt = 10;
int myInt2 = 20;

System.out.println("My Integer equals " + myInt + ", and the other one equals " + myInt2);

Answer 7

You can use String formatter, so by working on your example, I will do this:

int myInt = 10;
System.out.format("My Integer equals %d %n", myInt);

And if we converted the C# code to java, it will look like:

int myInt = 10;
int myInt2 = 20;
System.out.format("My Integer equals %d, and the other one equals %d %n", myInt, myInt2);

even more advancing, you can format the float with %.2f and format the int with %03d and much more.