What are the output statements of java?

The output statements of java include System.out.println(), System.out.print(), System.out.printf(), System.out.write(), System.out.format() , System.out.append().

The output statements of Java mainly include the following types:

System.out.println(): This is One of the most commonly used output statements in Java. It will print out the specified content on the console, with automatic line wrapping at the end.

System.out.print(): Similar to System.out.println(), but it does not automatically wrap lines. The output will be printed continuously on one line.

System.out.printf(): This is a formatted output statement that can output content according to the specified format. It is similar to the printf function in C language. You can use placeholders to specify the output format, such as %d for integers, %f for floating point numbers, etc.

For example:

int age = 20;
System.out.println("年龄：" + age);
System.out.print("姓名：");
System.out.println("张三");
System.out.printf("身高：%.2f米\n", 1.75);

The output result is:

年龄：20
姓名：张三
身高：1.75米

System.out.write(): This method is used to output a character to the console . It should be noted that it outputs the ASCII code of the character, not the character itself.

System.out.format(): This method is similar to System.out.printf() and is also used to format output. The difference is that System.out.format() uses the Formatter object for formatted output.

System.out.append(): This method is used to output a character sequence to the console, which can be a string, character array, etc.

In addition to the above output statements, other output streams can also be used to achieve more flexible output functions. For example, you can use FileOutputStream to output content to a file, use Socket's output stream to send content to the network, etc. But these are advanced usages and require more Java programming knowledge.

The above is the detailed content of What are the output statements of java?. For more information, please follow other related articles on the PHP Chinese website!