Java中的PrintWriter類的println(long)方法用于在流上列印指定的long值，然後換行。該long值用作參數。
用法:
public void println(long longValue)
參數：此方法接受強制參數longValue，該參數是要寫入流中的long值。
傳回值：此方法不傳回任何值。
下面的方法說明了println(long)方法的用法方式：
示例1:
// Java program to demonstrate
// PrintWriter println(long) method
import java.io.*;
class GFG {
public static void main(String[] args)
{
try {
// Create a PrintWriter instance
PrintWriter printr
= new PrintWriter(System.out);
// Print the long value '4'
// to this stream using println() method
// This will put the longValue in the
// stream till it is printed on the console
printr.println(4);
printr.flush();
}
catch (Exception e) {
System.out.println(e);
}
}
}
輸出：
4
示例2:
// Java program to demonstrate
// PrintWriter println(long) method
import java.io.*;
class GFG {
public static void main(String[] args)
{
try {
// Create a PrintWriter instance
PrintWriter printr
= new PrintWriter(System.out);
// Print the long value '65'
// to this stream using println() method
// This will put the longValue in the
// stream till it is printed on the console
printr.println(65);
printr.flush();
}
catch (Exception e) {
System.out.println(e);
}
}
}
輸出：
65