Being Code Expert: Java try/ catch block exception handling

The try statement allows you to define a block of code to be tested for errors while it is being executed. The catch statement allows you to define a block of code to be executed if an error occurs in the try block.

Example 1:

Java

import java.io.File;
import java.io.FileInputStream;

public class TryCatchException {
    public static void main(String[] args) {

        String pathname = "file";
        File file = new File(pathname);
        @SuppressWarnings("unused")
        FileInputStream fileInputStream = null;
        try {
            fileInputStream = new FileInputStream(file);
        } catch (Exception e) {
            System.out.println("File Not Present in the system");
        }
    }
}

Output

File Not Present in the system

Example 2:

Java

import java.io.*;

class M {
    void method() throws IOException {
        throw new IOException("error");
    }
}

public class Demothrows {
    public static void main(String args[]) {
        try {
            M m = new M();
            m.method();
        } catch (Exception e) {
            System.out.println("exception handled");
        }

        System.out.println("normal flow...");
    }
}