The following example demonstrates using the file.exists() method of the File class to detect whether a file exists:
import java.io.File;
public class Main {
public static void main(String[] args) {
File file = new File("C:/java.txt");
System.out.println(file.exists());
}
}The running result is (if it exists in your C drive File java.txt):
##exists(): public boolean exists() Tests the abstract pathname represented by this Whether the file or directory exists. Returns: true if and only if the file or directory represented by this abstract path name exists; otherwise returns false; Throws: SecurityExcepTIon if there is a security manager and its SecurityManager The .checkRead(java.lang.String) method denies write access to a file or directory. For more java knowledge, please pay attention to thetrue
java basic tutorial column.
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