How to check if the end of the String is one or zero?

You can use the String#endsWith :

System.out.println("jrp_jasper.jrp_jas_nome|0".endsWith("0"));      // true
System.out.println("jrp_jasper.jrp_jas_sobrenome|1".endsWith("0")); // false

You can also use String#substring :

String sampleString1 = "jrp_jasper.jrp_jas_nome|0";
String sampleString2 = "jrp_jasper.jrp_jas_sobrenome|1";

String ultimo1 = sampleString1.substring(sampleString1.length() - 1);
String ultimo2 = sampleString2.substring(sampleString2.length() - 1);

System.out.println(ultimo1.equals("0")); // true
System.out.println(ultimo2.equals("0")); // false

Editing

  

I have identified another problem as well. Since this string is the name of the   table in the database it is necessary to stay the same as the table, I give    replaceAll there is 0 if it contains 0, but if the string contains 0 it removes and   it is not to withdraw unless a 0 is at the end. What do I do?

String#replaceAll , the String#replace also works in this case.

Choose one of the above methods to check the end of the string , if the condition you want is satisfied, extract all the characters except the last one, here's a way to do this with String#substring :

String sampleString = "jrp_jasper.jrp_jas_nome|0;jrp_jasper.jrp_jas_sobrenome|1";
String[] items = sampleString.split(";");

for(String item: items){
    String nomeColuna = item.replace("|", "").replace(".", "_");

    if (nomeColuna.endsWith("0")){
        // Se terminar em 0
        nomeColuna = nomeColuna.substring(0, nomeColuna.length() - 1);
        System.out.println(nomeColuna);
    }
    else if (nomeColuna.endsWith("1")){
        // Se terminar em 1
        System.out.println(nomeColuna);
    }
    else{
        // Não termina em 0 nem 1
        System.out.println(nomeColuna);
    }
}

See demonstração

    String sampleString = "jrp_documento.jrp_doc_fornecedor|0";
    String[] items = sampleString.split(";");
    for(int i = 0; i < items.length; i++){
        if(items[i].charAt(items[i].length()-1) == '0'){
            System.out.println(items[i] + " termina em zero");
        }else{
            System.out.println(items[i] + " nao termina em zero");
        }   
    }

The above code takes String , isolates the last character with charAt , and check if it equals 0.

See the IDEONE .

To check at the end use endsWith, eg:

str.endsWith("0") || str.endsWith("1")